T: does it eat honey?
  T: does it bite?
    T: Is it a bed bug?
      N:
      T: Is it a bear?
        N:
        N:
    T: Is it a whale?
      N:
      T: Is it a bear?
        N:
        N:
  T: does it bite?
    T: Is it a bed bug?
      N:
      T: Is it a fly?
        N:
        N:
    T: Is it a whale?
      N:
      T: Is it a fly?
        N:
        N:
N:
N: