context: It is probably not the case that Emily is a sheep. It is almost certain that Mary went to the kitchen. It is certain that Greg is a lion.
hypothesis: It is almost certain that 'Emily is a sheep' or 'Mary went to the kitchen' or both.
valid_hypothesis: It is almost certain that 'Emily is a sheep' or 'Mary went to the kitchen' or both.
invalid_hypothesis: Chances are slight that 'Emily is a sheep' or 'Mary went to the kitchen' 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
    0.25::factA.
    0.95::factB.
    1.0::factC.
    
  
    %hop2
    conclusion:-or(factA,factB).
  
    query(conclusion).
    
hypothesis_assertion: 'Emily is a sheep' or 'Mary went to the kitchen' or both.