#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

No statement uses or specializes sign_language; click here to add one.