@prefix rdf: . @prefix owl: . @prefix xsd: . @prefix rdfs: . a ; rdfs:isDefinedBy ; rdfs:label "Ton Energy"@en ; "Energy equivalent of one ton of TNT"^^rdf:HTML ; ; 4.1840e09 ; "\\(t/lbf\\)"^^ ; ; ; "t/lbf" ; "Gcal"^^ .