It is probably the case that Mary went to the garden. There is little chance that Bernhard is a lion. It is improbable that Lily is a frog. There is little chance that if 'Bernhard is a lion and Mary went to the garden' then Winona is a mouse. It is probably not the case that if 'Mary went to the garden and Lily is a frog' then Daniel grabbed the apple. It is probably the case that if 'Lily is a frog' or 'Mary went to the garden' or both then Julius is yellow.
There is a better than even chance that 'Winona is a mouse' or 'Bernhard is a lion' or both.
There is little chance that 'Winona is a mouse' or 'Bernhard is a lion' or both.
There is a better than even chance that 'Winona is a mouse' or 'Bernhard is a lion' 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
  0.7::factA.
  0.1::factB.
  0.1::factC.
  %hop1
  0.1::factX:-and(factB,factA).
  0.25::factY:-and(factA,factC).
  0.7::factZ:-or(factC,factA).

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

  query(conclusion).
  
'Winona is a mouse' or 'Bernhard is a lion' or both.