Some subclasses seem deliberately missing from the SSN ontology RDF. Is there a way to import a complete SSN ontology?

Question

I am using Protege to explore the SSN ontology,
but a lot of classes like the survivalRange seem to be missing from the main file.

How could I import all the classes and entities of the ssn-system,
without importing them manually one by one by the IRI?

Answer 1

You can import http://www.w3.org/ns/ssn/systems/, which itself imports http://www.w3.org/ns/ssn/.