context: It is probable that Bernhard is yellow. There is a very good chance that Brian is green. It is highly likely that John moved to the garden.
hypothesis: It is likely that 'Brian is green and John moved to the garden'.
valid_hypothesis: It is likely that 'Brian is green and John moved to the garden'.
invalid_hypothesis: It is probably not the case that 'Brian is green and John moved to the garden'.
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
    0.7::factA.
    0.8::factB.
    0.9::factC.
    
  
    %hop2
    conclusion:-and(factB,factC).
  
    query(conclusion).
    
hypothesis_assertion: 'Brian is green and John moved to the garden'.