There is almost no chance that Greg is a rhino. There is a better than even chance that Winona is a wolf. It is unlikely that Bernhard is a lion. There is almost no chance that if either 'Greg is a rhino' or 'Winona is a wolf' but not both then Mary left the football. It is probably not the case that if 'Bernhard is a lion' or 'Greg is a rhino' or both then John put down the apple. We doubt that if 'Bernhard is a lion' or 'Greg is a rhino' or both then Lily is yellow.
It is probable that 'Winona is a wolf and Lily is yellow'.
There is almost no chance that 'Winona is a wolf and Lily is yellow'.
It is probable that 'Winona is a wolf and Lily is yellow'.

  and(A,B) :- A,B.
  or(A,B) :- A;B.
  nand(A,B) :- not(and(A,B)).
  nor(A,B) :- not(or(A,B)).
  xor(A,B) :- or(A,B), nand(A,B).

  %hop0
  0.02::factA.
  0.6::factB.
  0.2::factC.
  %hop1
  0.02::factX:-xor(factA,factB).
  0.25::factY:-or(factC,factA).
  0.2::factZ:-or(factC,factA).

  %hop2
  conclusion:-and(factB,factZ).

  query(conclusion).
  
'Winona is a wolf and Lily is yellow'.