@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/physical_biological_anthropology>
  skos:prefLabel "physical/biological anthropology"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/Ernst_Haeckel> .

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

<https://concepts.sagepub.com/social-science/concept/Ernst_Haeckel>
  skos:definition "Impavidi progrediamur— Courageously let us go forward. With this Latin expression, Ernst Haeckel ended his book The Freedom of Science and the Freedom to Teach (1879), in which he not only defended his belief in the evolutionary theory but also advocated that it should be taught in schools. [Source: <a href=\"https://sk.sagepub.com/reference/greenethics/n84.xml\" target=\"_blank\" data-id=\"to-sk\">Green Ethics and Philosophy: An A-to-Z Guide; Haeckel, Ernst</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/physical_biological_anthropology>, <https://concepts.sagepub.com/social-science/concept/key_people_in_anthropology>, <https://concepts.sagepub.com/social-science/concept/evolution> ;
  skos:prefLabel "Ernst Haeckel"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/key_people_in_anthropology>
  skos:prefLabel "key people in anthropology"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/Ernst_Haeckel> .

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