#deaf_person  a person with a severe auditory handicap
  supertype:  #handicapped_person__handicappedperson  a person who has some handicap that interferes with normal functions
  member of:  #deaf.people
  subtype:  #lip_reader__lipreader  someone who can understand spoken words by watching the movements of a speaker's lips
  subtype:  #deaf-mute__mute__deaf-and-dumb_person  a deaf person who is unable to speak
     subtype:  #silent_person__dummy  a person who does not talk

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