It is probably not the case that Brian is a lion. It is almost certain that Sandra left the football. It is improbable that Jessica is a mouse. It is probable that if either 'Brian is a lion' or 'Sandra left the football' but not both then Jeff went to the bedroom. There is a better than even chance that if 'Brian is a lion and Sandra left the football' then Greg is a rhino. There is almost no chance that if 'Jessica is a mouse and Sandra left the football' then Daniel got the apple.
It is impossible that 'Jessica is a mouse and Daniel got the apple'.
It is impossible that 'Jessica is a mouse and Daniel got the apple'.
It is likely that 'Jessica is a mouse and Daniel got the apple'.

  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
  0.25::factA.
  0.95::factB.
  0.1::factC.
  %hop1
  0.7::factX:-xor(factA,factB).
  0.6::factY:-and(factA,factB).
  0.02::factZ:-and(factC,factB).

  %hop2
  conclusion:-and(factC,factZ).

  query(conclusion).
  
'Jessica is a mouse and Daniel got the apple'.