This HTML5 document contains 5 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/
n4stackoverflow.
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:89763725
rdf:type
prov:Entity
prov:value
Basically, the query is an attempt to find all topics where the number of times someone other than the target user has posted in is zero.
prov:wasQuotedFrom
n4:com
Subject Item
isap:25278699
prov:wasDerivedFrom
isa:89763725
Subject Item
isap:227102465
prov:wasDerivedFrom
isa:89763725