context: It is almost certain that John discarded the apple. It is certain that Lily is a lion. There is a better than even chance that Brian is green. There is a better than even chance that if 'John discarded the apple and Lily is a lion' then Jason is bored. There is a better than even chance that if 'Lily is a lion' or 'Brian is green' or both then Julius is a swan. It is highly unlikely that if 'John discarded the apple and Brian is green' then Bill went to the garden.
hypothesis: We believe that 'Jason is bored and Brian is green'.
valid_hypothesis: It is probably not the case that 'Jason is bored and Brian is green'.
invalid_hypothesis: We believe that 'Jason is bored and Brian 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
    0.95::factA.
    1.0::factB.
    0.6::factC.
    %hop1
    0.6::factX:-and(factA,factB).
    0.6::factY:-or(factB,factC).
    0.05::factZ:-and(factA,factC).
  
    %hop2
    conclusion:-and(factX,factC).
  
    query(conclusion).
    
hypothesis_assertion: 'Jason is bored and Brian is green'.