It is probably not the case that Jessica is a mouse. It is highly likely that Lily is a rhino. It is highly unlikely that Bernhard is a swan. There is a better than even chance that if 'Jessica is a mouse and Bernhard is a swan' then Mary got the football. It is likely that if either 'Jessica is a mouse' or 'Lily is a rhino' but not both then Julius is yellow. It is almost certain that if 'Bernhard is a swan' or 'Jessica is a mouse' or both then John picked up the apple.
Chances are about even that 'Julius is yellow and Lily is a rhino'.
Chances are about even that 'Julius is yellow and Lily is a rhino'.
It is certain that 'Julius is yellow and Lily is a rhino'.

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

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

  query(conclusion).
  
'Julius is yellow and Lily is a rhino'.