#breeding_ground  a place where animals breed
  supertype:  piece_of_land__tract__piece_of_ground__parcel_of_land__parcel  an extended area of land
  subtype:  pesthole  a breeding ground for epidemic disease
  subtype:  rookery  a breeding ground for gregarious birds (such as rooks)
     subtype:  heronry  a breeding ground for herons; a heron rookery

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