Struggling with a SPARQL query over DBpedia

Question

My goal: Have a list of the Smartphones from DBpedia associated with manufacturers.

Example:
Iphone 6 | Apple
Samsung Galaxy S6 | Samsung
Iphone 5 | Apple
Sony xperia Z5 | Sony

What I did: I think that it would be a union query. So as a first step I tried to get all the smartphone list and I succeeded using this query:

SELECT ?phone 
where {?phone <http://dbpedia.org/property/type> <http://dbpedia.org/resource/Smartphone>} 

However I didn't succeed to get the manufactures list. I tried this query in order to get the manufacturer of the Iphone 6. But it didn't work.

SELECT ?Manufacturer 
where {?Manufacturer <http://dbpedia.org/property/manufacturer> <http://dbpedia.org/resource/Smartphone>}

Answer 1

?phone dbp:type dbr:Smartphone

This triple roughly means: "the type of ?phone is Smartphone". That makes sense, so you get what you want.

?manufacturer dbp:manufacturer dbr:Smartphone

This triple means: "the manufacturer of ?manufacturer is Smartphone". That doesn't make any sense, Smartphone is not something that can be a manufacturer. This is why you get no results.

What you want is:

• the type of ?phone is Smartphone
• the manufacturer of ?phone is ?manufacturer

In SPARQL:

SELECT *
WHERE {
  ?phone dbp:type dbr:Smartphone.
  ?phone dbp:manufacturer ?manufacturer.
}