We doubt that Julius is a swan. There is a better than even chance that Bernhard is a frog. There is a better than even chance that Lily is a rhino. It is almost certain that if either 'Julius is a swan' or 'Lily is a rhino' but not both then Emily is a wolf. There is a very good chance that if 'Lily is a rhino' or 'Bernhard is a frog' or both then John went to the kitchen. We believe that if 'Bernhard is a frog and Julius is a swan' then Jessica is a sheep.
Chances are about even that 'Lily is a rhino and Emily is a wolf'.
Chances are about even that 'Lily is a rhino and Emily is a wolf'.
It is almost certain that 'Lily is a rhino and Emily is a wolf'.

  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
  0.2::factA.
  0.6::factB.
  0.6::factC.
  %hop1
  0.95::factX:-xor(factA,factC).
  0.8::factY:-or(factC,factB).
  0.75::factZ:-and(factB,factA).

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

  query(conclusion).
  
'Lily is a rhino and Emily is a wolf'.