context: Chances are about even that Julius is white. It is almost certain that Mary left the milk. It is probably the case that Jessica is a cat.
hypothesis: It is almost certain that 'Julius is white and Jessica is a cat'.
valid_hypothesis: It is probably not the case that 'Julius is white and Jessica is a cat'.
invalid_hypothesis: It is almost certain that 'Julius is white and Jessica is a cat'.
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
    0.5::factA.
    0.95::factB.
    0.7::factC.
    
  
    %hop2
    conclusion:-and(factA,factC).
  
    query(conclusion).
    
hypothesis_assertion: 'Julius is white and Jessica is a cat'.