There is a better than even chance that Winona is a cat. It is highly unlikely that Bernhard is green. Chances are about even that Lily is a swan. There is a better than even chance that if 'Bernhard is green and Lily is a swan' then Greg is yellow. It is likely that if 'Winona is a cat' or 'Bernhard is green' or both then Julius is a lion. Chances are about even that if 'Winona is a cat and Lily is a swan' then John went to the kitchen.
There is almost no chance that 'Winona is a cat and Bernhard is green'.
There is almost no chance that 'Winona is a cat and Bernhard is green'.
It is probable that 'Winona is a cat and Bernhard is green'.

  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.
  0.05::factB.
  0.5::factC.
  %hop1
  0.6::factX:-and(factB,factC).
  0.7::factY:-or(factA,factB).
  0.5::factZ:-and(factA,factC).

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

  query(conclusion).
  
'Winona is a cat and Bernhard is green'.