It is certain that John moved to the office. There is little chance that Brian is a rhino. It is almost certain that Sandra dropped the milk. It is highly likely that if either 'Sandra dropped the milk' or 'John moved to the office' but not both then Lily is a frog. It is probable that if either 'John moved to the office' or 'Sandra dropped the milk' but not both then Jessica is a cat. It is highly likely that if 'Brian is a rhino' or 'John moved to the office' or both then Jeff left the apple.
There is almost no chance that 'Jessica is a cat' or 'John moved to the office' or both.
It is certain that 'Jessica is a cat' or 'John moved to the office' or both.
There is almost no chance that 'Jessica is a cat' or 'John moved to the office' 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
  1.0::factA.
  0.1::factB.
  0.95::factC.
  %hop1
  0.9::factX:-xor(factC,factA).
  0.7::factY:-xor(factA,factC).
  0.9::factZ:-or(factB,factA).

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

  query(conclusion).
  
'Jessica is a cat' or 'John moved to the office' or both.