It is impossible that Julius is a frog. It is likely that Brian is a swan. It is unlikely that Daniel left the apple. We believe that if 'Julius is a frog' or 'Daniel left the apple' or both then Lily is a rhino. It is almost certain that if 'Julius is a frog' or 'Daniel left the apple' or both then Gertrude is a cat. Chances are about even that if 'Julius is a frog and Brian is a swan' then Winona is a sheep.
There is little chance that 'Brian is a swan and Daniel left the apple'.
There is little chance that 'Brian is a swan and Daniel left the apple'.
It is likely that 'Brian is a swan and Daniel left the apple'.

  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.
  0.7::factB.
  0.2::factC.
  %hop1
  0.75::factX:-or(factA,factC).
  0.95::factY:-or(factA,factC).
  0.5::factZ:-and(factA,factB).

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

  query(conclusion).
  
'Brian is a swan and Daniel left the apple'.