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PrefixNamespace IRI
n4stackexchange.
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
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:126615073
rdf:type
prov:Entity
prov:value
You didn't mention what data types your columns are - if the CellValue is not too big, you could add it to the index (or at least include it in the index) to avoid costly key lookups:
prov:wasQuotedFrom
n4:com
Subject Item
isap:119474220
prov:wasDerivedFrom
isa:126615073