Chances are slight that John went to the garden. Chances are slight that Bernhard is a rhino. It is probably the case that Julius is yellow. It is almost certain that if 'Julius is yellow and John went to the garden' then Winona is a mouse. It is highly likely that if 'John went to the garden' or 'Julius is yellow' or both then Daniel took the apple. It is unlikely that if 'Bernhard is a rhino' or 'Julius is yellow' or both then Mary is in the school.
It is impossible that 'Winona is a mouse and Bernhard is a rhino'.
It is impossible that 'Winona is a mouse and Bernhard is a rhino'.
It is probably the case that 'Winona is a mouse and Bernhard is a rhino'.

  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
  0.1::factA.
  0.1::factB.
  0.7::factC.
  %hop1
  0.95::factX:-and(factC,factA).
  0.9::factY:-or(factA,factC).
  0.2::factZ:-or(factB,factC).

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

  query(conclusion).
  
'Winona is a mouse and Bernhard is a rhino'.