It is probably not the case that Bernhard is a rhino. There is almost no chance that Daniel left the milk. It is improbable that Brian is a frog. There is a better than even chance that if 'Bernhard is a rhino and Daniel left the milk' then Lily is green. It is highly unlikely that if 'Bernhard is a rhino' or 'Daniel left the milk' or both then John moved to the office. It is improbable that if either 'Daniel left the milk' or 'Brian is a frog' but not both then Jessica is a cat.
It is impossible that 'Daniel left the milk and Jessica is a cat'.
It is impossible that 'Daniel left the milk and Jessica is a cat'.
It is probably the case that 'Daniel left the milk and Jessica is a cat'.

  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
  0.25::factA.
  0.02::factB.
  0.1::factC.
  %hop1
  0.6::factX:-and(factA,factB).
  0.05::factY:-or(factA,factB).
  0.1::factZ:-xor(factB,factC).

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

  query(conclusion).
  
'Daniel left the milk and Jessica is a cat'.