It is likely that Lily is gray. There is almost no chance that John took the apple. It is highly unlikely that Antoine is hungry. It is certain that if 'John took the apple and Antoine is hungry' then Greg is green. We doubt that if 'Antoine is hungry and Lily is gray' then Bernhard is yellow. There is a very good chance that if 'Lily is gray and Antoine is hungry' then Mary went to the kitchen.
There is a very good chance that 'John took the apple and Mary went to the kitchen'.
It is impossible that 'John took the apple and Mary went to the kitchen'.
There is a very good chance that 'John took the apple and Mary went to the kitchen'.

  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.
  0.02::factB.
  0.05::factC.
  %hop1
  1.0::factX:-and(factB,factC).
  0.2::factY:-and(factC,factA).
  0.8::factZ:-and(factA,factC).

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

  query(conclusion).
  
'John took the apple and Mary went to the kitchen'.