#sign_language__signing  language expressed by visible hand gestures
  supertype:  #linguistic_communication__language  a systematic means of communicating by the use of sounds or conventional symbols; "he taught foreign languages"; "the language introduced is standard throughout the text"; "the speed with which a program can be executed depends on the language in which it is written"
  subtype:  #fingerspelling  #ASL
  part:  #sign.gesticulation  a gesture that is part of a sign language

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