It is unlikely that Lily is a rhino. It is almost certain that Julius is yellow. It is highly likely that Brian is green. It is probably not the case that if 'Lily is a rhino and Brian is green' then Mary left the football. It is certain that if either 'Julius is yellow' or 'Brian is green' but not both then Winona is a mouse. It is almost certain that if 'Lily is a rhino and Brian is green' then John went to the garden.
It is probably the case that either 'Lily is a rhino' or 'Winona is a mouse' but not both.
It is probably not the case that either 'Lily is a rhino' or 'Winona is a mouse' but not both.
It is probably the case that either 'Lily is a rhino' or 'Winona is a mouse' but not 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.
  0.95::factB.
  0.9::factC.
  %hop1
  0.25::factX:-and(factA,factC).
  1.0::factY:-xor(factB,factC).
  0.95::factZ:-and(factA,factC).

  %hop2
  conclusion:-xor(factA,factY).

  query(conclusion).
  
Either 'Lily is a rhino' or 'Winona is a mouse' but not both.