@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/pet_rocks>
  skos:definition "The pet rock was invented in 1975 by Gary Dahl, a 38-year-old advertiser from Los Gatos, California. Dahl conceived of the idea while talking to friends about the demands of keeping pets. [Source: <a href=\"https://sk.sagepub.com/reference/play/n272.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Play in Today's Society; Pet Rocks</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/toys> ;
  skos:prefLabel "pet rocks"@en ;
  a skos:Concept .

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

<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/pet_rocks> .