Ensured that RDF.type in the predicate position gets abbreviated to 'a' per the SPARQL grammar, while still supporting the non-abbreviated behavior when passing in an uninterned copy of RDF.type.
Ensured that RDF.type in the predicate position gets abbreviated to
'a' per the SPARQL grammar, while still supporting the non-abbreviated
behavior when passing in an uninterned copy of RDF.type.

ruby-rdf/sparql-client,ckristo/sparql-client