Reader.open should honor a :content_type before setting one from the returned file (URL). Reader.open options also take options from RDF::Format.for.
Reader.open should honor a :content_type before setting one from the returned file (URL).
Reader.open options also take options from RDF::Format.for.

PerfectMemory/rdf,ruby-rdf/rdf,ninjapanzer/rdf,jcoyne/rdf