context: There is almost no chance that Lily is a swan. It is likely that John moved to the office. It is probably not the case that Jason is tired.
hypothesis: It is likely that 'John moved to the office and Jason is tired'.
valid_hypothesis: We doubt that 'John moved to the office and Jason is tired'.
invalid_hypothesis: It is likely that 'John moved to the office and Jason is tired'.
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
    0.02::factA.
    0.7::factB.
    0.25::factC.
    
  
    %hop2
    conclusion:-and(factB,factC).
  
    query(conclusion).
    
hypothesis_assertion: 'John moved to the office and Jason is tired'.