context: There is a better than even chance that Fred is in the office. It is highly unlikely that Emily is a mouse. Chances are slight that Mary went to the kitchen.
hypothesis: It is probably the case that 'Emily is a mouse and Fred is in the office'.
valid_hypothesis: There is almost no chance that 'Emily is a mouse and Fred is in the office'.
invalid_hypothesis: It is probably the case that 'Emily is a mouse and Fred is in the office'.
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
    0.6::factA.
    0.05::factB.
    0.1::factC.
    
  
    %hop2
    conclusion:-and(factB,factA).
  
    query(conclusion).
    
hypothesis_assertion: 'Emily is a mouse and Fred is in the office'.