It is unlikely that Bernhard is a frog. We doubt that Mary moved to the garden. It is highly likely that Julius is a lion. It is improbable that if either 'Mary moved to the garden' or 'Bernhard is a frog' but not both then Brian is yellow. It is unlikely that if either 'Mary moved to the garden' or 'Bernhard is a frog' but not both then Lily is a rhino. It is probably not the case that if either 'Bernhard is a frog' or 'Julius is a lion' but not both then John discarded the milk.
It is highly likely that 'Julius is a lion' or 'Lily is a rhino' or both.
It is highly likely that 'Julius is a lion' or 'Lily is a rhino' or both.
It is improbable that 'Julius is a lion' or 'Lily is a rhino' or both.

  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.
  0.2::factB.
  0.9::factC.
  %hop1
  0.1::factX:-xor(factB,factA).
  0.2::factY:-xor(factB,factA).
  0.25::factZ:-xor(factA,factC).

  %hop2
  conclusion:-or(factC,factY).

  query(conclusion).
  
'Julius is a lion' or 'Lily is a rhino' or both.