There is a better than even chance that Brian is gray. It is probably not the case that John got the milk. Chances are slight that Jessica is a mouse. There is almost no chance that if either 'John got the milk' or 'Jessica is a mouse' but not both then Lily is a rhino. There is little chance that if either 'Jessica is a mouse' or 'John got the milk' but not both then Julius is green. It is probably not the case that if 'Brian is gray' or 'Jessica is a mouse' or both then Bernhard is a frog.
It is almost certain that 'John got the milk and Bernhard is a frog'.
It is highly unlikely that 'John got the milk and Bernhard is a frog'.
It is almost certain that 'John got the milk and Bernhard is a frog'.

  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
  0.6::factA.
  0.25::factB.
  0.1::factC.
  %hop1
  0.02::factX:-xor(factB,factC).
  0.1::factY:-xor(factC,factB).
  0.25::factZ:-or(factA,factC).

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

  query(conclusion).
  
'John got the milk and Bernhard is a frog'.