It is probably not the case that Daniel got the milk. We believe that Brian is a frog. Chances are slight that Winona is a wolf. It is certain that if either 'Winona is a wolf' or 'Daniel got the milk' but not both then Jeff went to the bedroom. Chances are slight that if either 'Brian is a frog' or 'Daniel got the milk' but not both then Emily is a mouse. We believe that if 'Daniel got the milk and Winona is a wolf' then Mary took the football.
It is probable that 'Mary took the football' or 'Emily is a mouse' or both.
It is improbable that 'Mary took the football' or 'Emily is a mouse' or both.
It is probable that 'Mary took the football' or 'Emily is a mouse' 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.
  0.75::factB.
  0.1::factC.
  %hop1
  1.0::factX:-xor(factC,factA).
  0.1::factY:-xor(factB,factA).
  0.75::factZ:-and(factA,factC).

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

  query(conclusion).
  
'Mary took the football' or 'Emily is a mouse' or both.