It is highly unlikely that Brian is green. It is probably not the case that Julius is a rhino. We believe that Winona is a cat. It is unlikely that if 'Julius is a rhino' or 'Brian is green' or both then Antoine is hungry. It is impossible that if 'Winona is a cat and Julius is a rhino' then John took the apple. Chances are slight that if 'Julius is a rhino' or 'Winona is a cat' or both then Bernhard is white.
There is a better than even chance that 'Julius is a rhino and Antoine is hungry'.
It is highly unlikely that 'Julius is a rhino and Antoine is hungry'.
There is a better than even chance that 'Julius is a rhino and Antoine is hungry'.

  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
  0.05::factA.
  0.25::factB.
  0.75::factC.
  %hop1
  0.2::factX:-or(factB,factA).
  0.0::factY:-and(factC,factB).
  0.1::factZ:-or(factB,factC).

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

  query(conclusion).
  
'Julius is a rhino and Antoine is hungry'.