It is almost certain that Jessica is a mouse. It is unlikely that Winona is a sheep. Chances are slight that John put down the apple. It is highly unlikely that if 'John put down the apple and Winona is a sheep' then Julius is white. It is unlikely that if 'John put down the apple and Jessica is a mouse' then Sandra took the milk. It is almost certain that if 'Winona is a sheep and John put down the apple' then Mary got the apple.
It is unlikely that 'Winona is a sheep and Jessica is a mouse'.
It is unlikely that 'Winona is a sheep and Jessica is a mouse'.
It is highly likely that 'Winona is a sheep and Jessica is a mouse'.

  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
  0.95::factA.
  0.2::factB.
  0.1::factC.
  %hop1
  0.05::factX:-and(factC,factB).
  0.2::factY:-and(factC,factA).
  0.95::factZ:-and(factB,factC).

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

  query(conclusion).
  
'Winona is a sheep and Jessica is a mouse'.