It is unlikely that Lily is a rhino. It is certain that Emily is a mouse. It is almost certain that Jeff went to the hallway. There is a very good chance that if 'Jeff went to the hallway and Lily is a rhino' then Bernhard is yellow. It is likely that if 'Lily is a rhino' or 'Jeff went to the hallway' or both then Julius is a frog. Chances are slight that if either 'Lily is a rhino' or 'Jeff went to the hallway' but not both then Jason is tired.
It is highly likely that either 'Lily is a rhino' or 'Bernhard is yellow' but not both.
It is highly unlikely that either 'Lily is a rhino' or 'Bernhard is yellow' but not both.
It is highly likely that either 'Lily is a rhino' or 'Bernhard is yellow' 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.
  1.0::factB.
  0.95::factC.
  %hop1
  0.8::factX:-and(factC,factA).
  0.7::factY:-or(factA,factC).
  0.1::factZ:-xor(factA,factC).

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

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