#opener  a hand tool used for opening sealed containers (bottles or cans)
  supertype:  #hand_tool  a tool used with workers' hands
  subtype:  #bottle_opener  an opener for removing caps or corks from bottles
     subtype:  #cap_opener__capopener  a bottle opener to pry off caps
     subtype:  #corkscrew__bottle_screw  a bottle opener that pulls corks
  subtype:  #can_opener__canopener__tin_opener__tinopener  a device for cutting cans open
     subtype:  #church_key  can opener that has a triangular pointed end that pierces the tops of cans
  subtype:  #latchstring  opener consisting of a string that can be passed through a hole in a door for raising the latch from outside

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