context: There is little chance that Daniel took the milk. It is likely that Lily is a rhino. It is impossible that Mary is in the school.
hypothesis: There is a better than even chance that 'Daniel took the milk and Mary is in the school'.
valid_hypothesis: It is impossible that 'Daniel took the milk and Mary is in the school'.
invalid_hypothesis: There is a better than even chance that 'Daniel took the milk and Mary is in the school'.
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
    0.1::factA.
    0.7::factB.
    0.0::factC.
    
  
    %hop2
    conclusion:-and(factA,factC).
  
    query(conclusion).
    
hypothesis_assertion: 'Daniel took the milk and Mary is in the school'.