Chances are about even that Brian is gray. It is probably not the case that Jessica is a wolf. Chances are about even that Bernhard is white. There is a better than even chance that if 'Jessica is a wolf' or 'Brian is gray' or both then John moved to the garden. It is likely that if 'Jessica is a wolf and Brian is gray' then Mary went to the bedroom. It is probably the case that if 'Jessica is a wolf' or 'Bernhard is white' or both then Lily is a rhino.
We doubt that 'Lily is a rhino and John moved to the garden'.
We doubt that 'Lily is a rhino and John moved to the garden'.
It is almost certain that 'Lily is a rhino and John moved to the garden'.

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

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

  query(conclusion).
  
'Lily is a rhino and John moved to the garden'.