@prefix rdf: . @prefix skos: . rdf:type skos:Concept . @prefix rdfs: . rdfs:label "History of Essex County, Massachusetts"@en . @prefix dbc: . skos:broader dbc:Histories_of_counties_in_Massachusetts , ; skos:prefLabel "History of Essex County, Massachusetts"@en . @prefix dbo: . dbo:wikiPageID 64149638 ; dbo:wikiPageRevisionID 1026642322 . @prefix prov: . prov:wasDerivedFrom .