It is impossible that Brian is green. It is certain that John went to the bedroom. There is little chance that Lily is a rhino. It is likely that if 'Brian is green' or 'John went to the bedroom' or both then Jessica is a cat. It is impossible that if 'Brian is green and Lily is a rhino' then Greg is a swan. Chances are about even that if 'Brian is green and John went to the bedroom' then Daniel dropped the milk.
It is likely that 'Lily is a rhino and Jessica is a cat'.
It is highly unlikely that 'Lily is a rhino and Jessica is a cat'.
It is likely that 'Lily is a rhino 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
  0.0::factA.
  1.0::factB.
  0.1::factC.
  %hop1
  0.7::factX:-or(factA,factB).
  0.0::factY:-and(factA,factC).
  0.5::factZ:-and(factA,factB).

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

  query(conclusion).
  
'Lily is a rhino and Jessica is a cat'.