It is likely that John grabbed the apple. It is probably not the case that Daniel put down the milk. There is almost no chance that Julius is white. There is almost no chance that if either 'Daniel put down the milk' or 'John grabbed the apple' but not both then Emily is a cat. It is probably the case that if 'Julius is white' or 'John grabbed the apple' or both then Mary got the football. It is probably the case that if either 'Julius is white' or 'Daniel put down the milk' but not both then Bernhard is green.
It is highly unlikely that 'Mary got the football' or 'Bernhard is green' or both.
There is a better than even chance that 'Mary got the football' or 'Bernhard is green' or both.
It is highly unlikely that 'Mary got the football' or 'Bernhard is green' 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.
  0.25::factB.
  0.02::factC.
  %hop1
  0.02::factX:-xor(factB,factA).
  0.7::factY:-or(factC,factA).
  0.7::factZ:-xor(factC,factB).

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

  query(conclusion).
  
'Mary got the football' or 'Bernhard is green' or both.