lib/rdf/vocab/sc.rb should be a vocab-fetch from an ontology

[dazza-codes]

Note: this class fails to cooperate with:
puts RDF::Graph.load( RDF::SC ).to_ttl

That should work, e.g. see:
puts RDF::Graph.load( RDF::RDFS ).to_ttl

The file was manually created from translating the documentation page. A translation to an ontology, publishing the ontology at a PURL, and then a vocab-fetch would be a better approach. It would then be compatible with the rdf-vocab project.

[dazza-codes]

To get RDF::SC as a graph, use
g = RDF::Graph.new << RDF::SC.to_enum
Then to get turtle use
puts g.to_ttl.

[dazza-codes]

This is superceded by #11