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sparqljenaowlontologyfuseki

SPARQL Query results not working on localhost OWL file

I have recently created an ontology using protege and then using Apache Jena Fuseki 3.8.0 to query the results.

So the .OWL file is hosted locally using MAMP. The OWL file hosted without any issue.

But when I do a simple Query,

PREFIX uni:<http://localhost:8888/university.owl#>
SELECT * {?Student uni:studies uni:M101}

This does not show any results. What could cause this issue? Is it because I have hosted the .OWL file locally? Or any other issues?

OWL file given below if needed.

<rdf:RDF xmlns="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xml:base="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl">
<owl:Ontology rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl"/>
 <!--

    ///////////////////////////////////////////////////////////////////////////////////////
    //
    // Object Properties
    //
    ///////////////////////////////////////////////////////////////////////////////////////

-->
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#studies 
-->
<owl:ObjectProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#studies">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<rdfs:range rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module"/>
</owl:ObjectProperty>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#teaches 
-->
<owl:ObjectProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#teaches"/>
 <!--  http://www.w3.org/2002/07/owl#topObjectProperty  -->
<rdf:Description rdf:about="http://www.w3.org/2002/07/owl#topObjectProperty">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer"/>
<rdfs:range rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module"/>
</rdf:Description>
 <!--

    ///////////////////////////////////////////////////////////////////////////////////////
    //
    // Data properties
    //
    ///////////////////////////////////////////////////////////////////////////////////////

-->
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#first_name 
-->
<owl:DatatypeProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#first_name">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person"/>
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#last_name 
-->
<owl:DatatypeProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#last_name">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person"/>
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#staffID 
-->
<owl:DatatypeProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#staffID">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer"/>
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
</owl:DatatypeProperty>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#studentID 
-->
<owl:DatatypeProperty rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#studentID">
<rdfs:domain rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
</owl:DatatypeProperty>
 <!--

    ///////////////////////////////////////////////////////////////////////////////////////
    //
    // Classes
    //
    ///////////////////////////////////////////////////////////////////////////////////////

-->
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer">
<rdfs:subClassOf rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person"/>
</owl:Class>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#MobileModule 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#MobileModule">
<rdfs:subClassOf rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module"/>
</owl:Class>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module"/>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person"/>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student">
<rdfs:subClassOf rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Person"/>
</owl:Class>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#WebModule 
-->
<owl:Class rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#WebModule">
<rdfs:subClassOf rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Module"/>
</owl:Class>
 <!--

    ///////////////////////////////////////////////////////////////////////////////////////
    //
    // Individuals
    //
    ///////////////////////////////////////////////////////////////////////////////////////

-->
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer1 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer1">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer"/>
<teaches rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M101"/>
<teaches rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M102"/>
<first_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Chris</first_name>
<last_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Brown</last_name>
<staffID rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">43532</staffID>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer2 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer2">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer"/>
<teaches rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W101"/>
<teaches rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W103"/>
<first_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Larisa</first_name>
<last_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Sherman</last_name>
<staffID rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">24214</staffID>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M101 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M101">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#MobileModule"/>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M102 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M102">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#MobileModule"/>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student1 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student1">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<studies rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M101"/>
<studies rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W101"/>
<first_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Steve</first_name>
<last_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Perera</last_name>
<studentID rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2015062</studentID>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student2 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student2">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<studies rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M102"/>
<studies rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W103"/>
<first_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Justin</first_name>
<last_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Nience</last_name>
<studentID rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2015063</studentID>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student3 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student3">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<studies rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#M101"/>
<first_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">John</first_name>
<last_name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Fernando</last_name>
<studentID rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2015076</studentID>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W101 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W101">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#WebModule"/>
</owl:NamedIndividual>
 <!--
 http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W103 
-->
<owl:NamedIndividual rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#W103">
<rdf:type rdf:resource="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#WebModule"/>
</owl:NamedIndividual>
 <!--

    ///////////////////////////////////////////////////////////////////////////////////////
    //
    // General axioms
    //
    ///////////////////////////////////////////////////////////////////////////////////////

-->
<rdf:Description>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#AllDisjointClasses"/>
<owl:members rdf:parseType="Collection">
<rdf:Description rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Lecturer"/>
<rdf:Description rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#MobileModule"/>
<rdf:Description rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#Student"/>
<rdf:Description rdf:about="http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#WebModule"/>
</owl:members>
</rdf:Description>
</rdf:RDF>
<!--
 Generated by the OWL API (version 4.2.8.20170104-2310) https://github.com/owlcs/owlapi 
-->
Solution

  • According to your Protégé preferences (File > Preferences), a new entity IRI starts with active ontology URI, followed by #, and ends with user supplied name.

    Thus, declare the uni prefix as follows:

    PREFIX uni: <http://www.semanticweb.org/lakindugunasekara/ontologies/2018/8/university.owl#>