This HTML5 document contains 4 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
n4wordpress.
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:447158805
rdf:type
prov:Entity
prov:value
It looks like it probably wont affect your plugin, other than needing to short-circuit the filter, since its only using the basedir and baseurl pieces of the result.
prov:wasQuotedFrom
n4:org
Subject Item
isap:390028632
prov:wasDerivedFrom
isa:447158805