context: It is almost certain that Greg is a lion. It is highly unlikely that Jessica is a mouse. There is a better than even chance that Brian is yellow.
hypothesis: It is probable that 'Greg is a lion and Jessica is a mouse'.
valid_hypothesis: It is highly unlikely that 'Greg is a lion and Jessica is a mouse'.
invalid_hypothesis: It is probable that 'Greg is a lion and Jessica 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.
    0.05::factB.
    0.6::factC.
    
  
    %hop2
    conclusion:-and(factA,factB).
  
    query(conclusion).
    
hypothesis_assertion: 'Greg is a lion and Jessica is a mouse'.