It is probably the case that Mary got the football. Chances are slight that Greg is a swan. Chances are slight that Antoine is hungry. There is little chance that if either 'Antoine is hungry' or 'Mary got the football' but not both then Bernhard is a frog. Chances are slight that if either 'Antoine is hungry' or 'Mary got the football' but not both then Winona is a wolf. There is a better than even chance that if 'Mary got the football and Antoine is hungry' then John went to the kitchen.
It is almost certain that 'Winona is a wolf' or 'John went to the kitchen' or both.
Chances are slight that 'Winona is a wolf' or 'John went to the kitchen' or both.
It is almost certain that 'Winona is a wolf' or 'John went to the kitchen' or both.

  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
  0.7::factA.
  0.1::factB.
  0.1::factC.
  %hop1
  0.1::factX:-xor(factC,factA).
  0.1::factY:-xor(factC,factA).
  0.6::factZ:-and(factA,factC).

  %hop2
  conclusion:-or(factY,factZ).

  query(conclusion).
  
'Winona is a wolf' or 'John went to the kitchen' or both.