@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/resources_and_conservation>
  skos:prefLabel "resources and conservation"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/petroleum> .

<https://concepts.sagepub.com/social-science/concept/pollution>
  skos:prefLabel "pollution"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/petroleum> .

<https://concepts.sagepub.com/social-science/concept/liquid_fuels>
  skos:prefLabel "liquid fuels"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/petroleum> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/petroleum> .

<https://concepts.sagepub.com/social-science/concept/petroleum>
  skos:definition "Petroleum, or crude oil, is a nonrenewable natural resource that has had a tremendous beneficial influence on human society. With a name derived from Latin petra (rock) and oleum (oil), petroleum represents the world's most important energy resource. [Source: <a href=\"https://sk.sagepub.com/reference/environment/n838.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Environment and Society; Petroleum</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/resources_and_conservation>, <https://concepts.sagepub.com/social-science/concept/pollution>, <https://concepts.sagepub.com/social-science/concept/liquid_fuels> ;
  skos:prefLabel "petroleum"@en ;
  a skos:Concept .