It is probable that Winona is a mouse. There is a better than even chance that Lily is a frog. It is probable that Sandra grabbed the apple. It is impossible that if either 'Sandra grabbed the apple' or 'Lily is a frog' but not both then John moved to the garden. We doubt that if 'Winona is a mouse' or 'Sandra grabbed the apple' or both then Mary went to the bedroom. There is a better than even chance that if 'Winona is a mouse' or 'Sandra grabbed the apple' or both then Brian is a rhino.
Chances are about even that 'Lily is a frog and Winona is a mouse'.
Chances are about even that 'Lily is a frog and Winona is a mouse'.
It is almost certain that 'Lily is a frog and Winona 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
  0.7::factA.
  0.6::factB.
  0.7::factC.
  %hop1
  0.0::factX:-xor(factC,factB).
  0.2::factY:-or(factA,factC).
  0.6::factZ:-or(factA,factC).

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

  query(conclusion).
  
'Lily is a frog and Winona is a mouse'.