It is almost certain that Fred put down the apple. There is almost no chance that Jessica is a sheep. It is highly likely that John went to the kitchen. There is almost no chance that if either 'Fred put down the apple' or 'Jessica is a sheep' but not both then Winona is a sheep. It is unlikely that if 'Jessica is a sheep and Fred put down the apple' then Greg is a lion. It is impossible that if 'John went to the kitchen' or 'Fred put down the apple' or both then Bernhard is a frog.
It is impossible that 'Winona is a sheep and Jessica is a sheep'.
It is impossible that 'Winona is a sheep and Jessica is a sheep'.
There is a very good chance that 'Winona is a sheep and Jessica is a sheep'.

  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.
  0.02::factB.
  0.9::factC.
  %hop1
  0.02::factX:-xor(factA,factB).
  0.2::factY:-and(factB,factA).
  0.0::factZ:-or(factC,factA).

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

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