@prefix rdf: . @prefix dbc: . @prefix skos: . dbc:American_frontier rdf:type skos:Concept . @prefix rdfs: . dbc:American_frontier rdfs:label "American frontier"@en ; skos:broader dbc:History_of_the_American_West , dbc:History_of_the_Midwestern_United_States , dbc:History_of_United_States_expansionism , dbc:Western_United_States , , dbc:American_folklore , , dbc:Eras_of_United_States_history ; skos:prefLabel "American frontier"@en . @prefix dbo: . dbc:American_frontier dbo:wikiPageID 16501850 ; dbo:wikiPageRevisionID 1016104729 . @prefix dbp: . @prefix dbt: . dbc:American_frontier dbp:wikiPageUsesTemplate dbt:Commons_category , dbt:Cat_main , dbt:CatAutoTOC . @prefix prov: . dbc:American_frontier prov:wasDerivedFrom .