context: It is almost certain that Emily is a mouse. There is a very good chance that John took the apple. There is a better than even chance that Brian is white.
hypothesis: There is little chance that 'Brian is white and Emily is a mouse'.
valid_hypothesis: There is a better than even chance that 'Brian is white and Emily is a mouse'.
invalid_hypothesis: There is little chance that 'Brian is white and Emily is a mouse'.
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.
    0.8::factB.
    0.6::factC.
    
  
    %hop2
    conclusion:-and(factC,factA).
  
    query(conclusion).
    
hypothesis_assertion: 'Brian is white and Emily is a mouse'.