#drop-leaf_table  a table that has a drop leaf
  supertype:  #table  a piece of furniture having a smooth flat top supported by one or more vertical legs; "it was a sturdy table"
  subtype:  #gate-leg_table  a drop-leaf table with leaves supported by gated legs
  part:  #drop-leaf  a hinged leaf on a table that can be raised and supported by a bracket

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