It is impossible that Jessica is a cat. It is likely that Lily is green. It is almost certain that Bernhard is green. It is likely that if either 'Lily is green' or 'Jessica is a cat' but not both then John moved to the office. There is a better than even chance that if either 'Bernhard is green' or 'Lily is green' but not both then Greg is a swan. There is a very good chance that if either 'Lily is green' or 'Jessica is a cat' but not both then Mary went to the bedroom.
It is almost certain that 'Greg is a swan' or 'Bernhard is green' or both.
It is almost certain that 'Greg is a swan' or 'Bernhard is green' or both.
Chances are about even that 'Greg is a swan' or 'Bernhard is green' 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
  0.0::factA.
  0.7::factB.
  0.95::factC.
  %hop1
  0.7::factX:-xor(factB,factA).
  0.6::factY:-xor(factC,factB).
  0.8::factZ:-xor(factB,factA).

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

  query(conclusion).
  
'Greg is a swan' or 'Bernhard is green' or both.