context: It is probable that Winona is a mouse. It is highly likely that Greg is a rhino. There is a better than even chance that Jessica is a wolf. It is probable that if 'Greg is a rhino and Winona is a mouse' then John got the football. It is almost certain that if 'Winona is a mouse and Jessica is a wolf' then Bernhard is white. It is impossible that if either 'Jessica is a wolf' or 'Greg is a rhino' but not both then Antoine is hungry.
hypothesis: There is almost no chance that 'Jessica is a wolf and Winona is a mouse'.
valid_hypothesis: Chances are about even that 'Jessica is a wolf and Winona is a mouse'.
invalid_hypothesis: There is almost no chance that 'Jessica is a wolf and Winona is a mouse'.
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
    0.7::factA.
    0.9::factB.
    0.6::factC.
    %hop1
    0.7::factX:-and(factB,factA).
    0.95::factY:-and(factA,factC).
    0.0::factZ:-xor(factC,factB).
  
    %hop2
    conclusion:-and(factC,factA).
  
    query(conclusion).
    
hypothesis_assertion: 'Jessica is a wolf and Winona is a mouse'.