context: It is almost certain that Mary took the milk. It is probable that Julius is yellow. There is almost no chance that Jessica is a mouse.
hypothesis: Chances are slight that 'Julius is yellow and Mary took the milk'.
valid_hypothesis: It is probable that 'Julius is yellow and Mary took the milk'.
invalid_hypothesis: Chances are slight that 'Julius is yellow and Mary took the milk'.
problog: 
    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
    0.95::factA.
    0.7::factB.
    0.02::factC.
    
  
    %hop2
    conclusion:-and(factB,factA).
  
    query(conclusion).
    
hypothesis_assertion: 'Julius is yellow and Mary took the milk'.