It is impossible that Brian is a rhino. We doubt that Fred discarded the apple. It is probably not the case that Daniel took the milk. It is unlikely that if 'Brian is a rhino' or 'Fred discarded the apple' or both then Bill went to the kitchen. It is probably not the case that if 'Fred discarded the apple' or 'Brian is a rhino' or both then Lily is white. It is almost certain that if 'Brian is a rhino and Daniel took the milk' then John is in the garden.
It is likely that 'John is in the garden' or 'Brian is a rhino' or both.
It is impossible that 'John is in the garden' or 'Brian is a rhino' or both.
It is likely that 'John is in the garden' or 'Brian 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
  0.0::factA.
  0.2::factB.
  0.25::factC.
  %hop1
  0.2::factX:-or(factA,factB).
  0.25::factY:-or(factB,factA).
  0.95::factZ:-and(factA,factC).

  %hop2
  conclusion:-or(factZ,factA).

  query(conclusion).
  
'John is in the garden' or 'Brian is a rhino' or both.