It is highly unlikely that Daniel got the apple. It is highly unlikely that Antoine is hungry. We doubt that Julius is a frog. We doubt that if either 'Julius is a frog' or 'Daniel got the apple' but not both then Sandra dropped the milk. There is a very good chance that if 'Daniel got the apple and Julius is a frog' then Bernhard is yellow. It is impossible that if 'Daniel got the apple and Antoine is hungry' then Jeff left the apple.
There is a better than even chance that 'Antoine is hungry' or 'Jeff left the apple' or both.
It is highly unlikely that 'Antoine is hungry' or 'Jeff left the apple' or both.
There is a better than even chance that 'Antoine is hungry' or 'Jeff left the apple' 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
  0.05::factA.
  0.05::factB.
  0.2::factC.
  %hop1
  0.2::factX:-xor(factC,factA).
  0.8::factY:-and(factA,factC).
  0.0::factZ:-and(factA,factB).

  %hop2
  conclusion:-or(factB,factZ).

  query(conclusion).
  
'Antoine is hungry' or 'Jeff left the apple' or both.