There is a very good chance that Winona is a wolf. There is little chance that Emily is a wolf. We doubt that John went to the bedroom. There is almost no chance that if 'Winona is a wolf and Emily is a wolf' then Bernhard is yellow. There is little chance that if 'Emily is a wolf' or 'John went to the bedroom' or both then Julius is a lion. Chances are slight that if either 'John went to the bedroom' or 'Emily is a wolf' but not both then Daniel got the football.
There is little chance that 'Julius is a lion' or 'Emily is a wolf' or both.
There is little chance that 'Julius is a lion' or 'Emily is a wolf' or both.
It is likely that 'Julius is a lion' or 'Emily is a wolf' 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
  0.8::factA.
  0.1::factB.
  0.2::factC.
  %hop1
  0.02::factX:-and(factA,factB).
  0.1::factY:-or(factB,factC).
  0.1::factZ:-xor(factC,factB).

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

  query(conclusion).
  
'Julius is a lion' or 'Emily is a wolf' or both.