context: There is a very good chance that Julius is green. It is highly unlikely that Lily is a lion. It is impossible that Jessica is a cat.
hypothesis: We believe that 'Lily is a lion and Julius is green'.
valid_hypothesis: It is highly unlikely that 'Lily is a lion and Julius is green'.
invalid_hypothesis: We believe that 'Lily is a lion and Julius is green'.
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
    0.8::factA.
    0.05::factB.
    0.0::factC.
    
  
    %hop2
    conclusion:-and(factB,factA).
  
    query(conclusion).
    
hypothesis_assertion: 'Lily is a lion and Julius is green'.