It is improbable that Lily is a rhino. It is probably the case that Sandra got the milk. We doubt that John moved to the garden. It is probably not the case that if 'Lily is a rhino and John moved to the garden' then Emily is a wolf. It is probably the case that if either 'Sandra got the milk' or 'John moved to the garden' but not both then Brian is a frog. It is impossible that if 'John moved to the garden' or 'Sandra got the milk' or both then Mary went to the kitchen.
We doubt that 'Emily is a wolf' or 'John moved to the garden' or both.
We doubt that 'Emily is a wolf' or 'John moved to the garden' or both.
We believe that 'Emily is a wolf' or 'John moved to the garden' 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
  0.1::factA.
  0.7::factB.
  0.2::factC.
  %hop1
  0.25::factX:-and(factA,factC).
  0.7::factY:-xor(factB,factC).
  0.0::factZ:-or(factC,factB).

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

  query(conclusion).
  
'Emily is a wolf' or 'John moved to the garden' or both.