It is likely that Daniel put down the milk. It is highly likely that Brian is green. There is a better than even chance that Bernhard is yellow. It is certain that if either 'Daniel put down the milk' or 'Brian is green' but not both then Greg is a rhino. It is likely that if 'Daniel put down the milk and Bernhard is yellow' then Lily is a lion. It is probably the case that if 'Daniel put down the milk' or 'Bernhard is yellow' or both then John went to the kitchen.
It is almost certain that 'Greg is a rhino and Daniel put down the milk'.
It is highly unlikely that 'Greg is a rhino and Daniel put down the milk'.
It is almost certain that 'Greg is a rhino and Daniel put down the milk'.

  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.
  0.9::factB.
  0.6::factC.
  %hop1
  1.0::factX:-xor(factA,factB).
  0.7::factY:-and(factA,factC).
  0.7::factZ:-or(factA,factC).

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

  query(conclusion).
  
'Greg is a rhino and Daniel put down the milk'.