context: Chances are slight that Jessica is a mouse. There is a better than even chance that Sandra got the milk. It is likely that Lily is a swan.
hypothesis: There is a better than even chance that 'Jessica is a mouse' or 'Sandra got the milk' or both.
valid_hypothesis: There is a better than even chance that 'Jessica is a mouse' or 'Sandra got the milk' or both.
invalid_hypothesis: Chances are slight that 'Jessica is a mouse' or 'Sandra got the milk' or both.
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.
    0.6::factB.
    0.7::factC.
    
  
    %hop2
    conclusion:-or(factA,factB).
  
    query(conclusion).
    
hypothesis_assertion: 'Jessica is a mouse' or 'Sandra got the milk' or both.