It is probably not the case that John took the apple. There is a better than even chance that Mary moved to the garden. There is almost no chance that Julius is yellow. It is highly likely that if 'Julius is yellow and John took the apple' then Greg is gray. There is a better than even chance that if 'Mary moved to the garden and Julius is yellow' then Bernhard is green. It is highly likely that if 'John took the apple and Julius is yellow' then Sandra dropped the milk.
It is impossible that 'Julius is yellow and John took the apple'.
It is impossible that 'Julius is yellow and John took the apple'.
Chances are about even that 'Julius is yellow and John took 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.
  0.6::factB.
  0.02::factC.
  %hop1
  0.9::factX:-and(factC,factA).
  0.6::factY:-and(factB,factC).
  0.9::factZ:-and(factA,factC).

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

  query(conclusion).
  
'Julius is yellow and John took the apple'.