It is likely that John went to the hallway. There is almost no chance that Winona is a cat. It is probably not the case that Julius is white. It is impossible that if 'John went to the hallway' or 'Julius is white' or both then Brian is green. There is a very good chance that if 'John went to the hallway' or 'Winona is a cat' or both then Jessica is a mouse. It is improbable that if 'Julius is white and John went to the hallway' then Greg is a rhino.
It is probable that 'Julius is white and Winona is a cat'.
It is impossible that 'Julius is white and Winona is a cat'.
It is probable that 'Julius is white and Winona is a cat'.

  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
  0.7::factA.
  0.02::factB.
  0.25::factC.
  %hop1
  0.0::factX:-or(factA,factC).
  0.8::factY:-or(factA,factB).
  0.1::factZ:-and(factC,factA).

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

  query(conclusion).
  
'Julius is white and Winona is a cat'.