It is probable that Lily is a rhino. It is probably not the case that Julius is a rhino. There is a very good chance that Daniel took the apple. It is likely that if either 'Julius is a rhino' or 'Daniel took the apple' but not both then Mary got the football. It is probably not the case that if either 'Lily is a rhino' or 'Julius is a rhino' but not both then John dropped the milk. It is highly likely that if 'Daniel took the apple and Julius is a rhino' then Brian is a frog.
There is a better than even chance that either 'Lily is a rhino' or 'Julius is a rhino' but not both.
There is a better than even chance that either 'Lily is a rhino' or 'Julius is a rhino' but not both.
Chances are slight that either 'Lily is a rhino' or 'Julius is a rhino' 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
  0.7::factA.
  0.25::factB.
  0.8::factC.
  %hop1
  0.7::factX:-xor(factB,factC).
  0.25::factY:-xor(factA,factB).
  0.9::factZ:-and(factC,factB).

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

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