Distinct subjects for predicate rdf:first sorted by frequency

Resource	Count
(owl:Nothing,<_:file:///home/vdeboer/src/ClioPatria/ClioPatria/rdf/base/owl.owl#_:Description1>)	1
(<_:file:///home/vdeboer/src/ClioPatria/ClioPatria/rdf/base/owl.owl#_:Description1>)	1