It is probably not the case that Winona is a wolf. There is a better than even chance that Jessica is a mouse. It is probably the case that Lily is a swan. It is likely that if 'Lily is a swan and Jessica is a mouse' then Julius is a lion. We believe that if 'Winona is a wolf' or 'Jessica is a mouse' or both then Daniel got the football. It is probably the case that if either 'Jessica is a mouse' or 'Lily is a swan' but not both then John dropped the apple.
There is a very good chance that 'Lily is a swan' or 'Winona is a wolf' or both.
There is a very good chance that 'Lily is a swan' or 'Winona is a wolf' or both.
It is impossible that 'Lily is a swan' or 'Winona 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
  0.25::factA.
  0.6::factB.
  0.7::factC.
  %hop1
  0.7::factX:-and(factC,factB).
  0.75::factY:-or(factA,factB).
  0.7::factZ:-xor(factB,factC).

  %hop2
  conclusion:-or(factC,factA).

  query(conclusion).
  
'Lily is a swan' or 'Winona is a wolf' or both.