@prefix n9j: <http://data.loterre.fr/ark:/67375/N9J> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

n9j:-concepts
  a isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member n9j:-N135Z4PN-K .

n9j:-NWHMR7CH-9
  skos:prefLabel "aircraft"@en ;
  a skos:Concept ;
  skos:narrower n9j:-N135Z4PN-K .

n9j:-N135Z4PN-K
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/helicopters> ;
  skos:definition "Helicopters are the most common type of rotary-wing aircraft, which generate lift through the revolution of wings (rotor blades) around a mast. In the case of helicopters, these rotors are driven by one or more engines throughout the flight, and the rotors also provide multidirectional thrust. [Source: Encyclopedia of Transportation: Social Science and Policy; Helicopters]"@en ;
  a skos:Concept ;
  skos:inScheme n9j: ;
  skos:broader n9j:-NWHMR7CH-9 ;
  skos:prefLabel "helicopters"@en .

n9j: a skos:ConceptScheme .