context: It is almost certain that Brian is gray. It is probably not the case that Greg is a frog. It is probably the case that Julius is yellow. There is a better than even chance that if Brian is gray, or Julius is yellow, then Gertrude is a wolf. It is likely that if Brian is gray, or Greg is a frog, then Lily is a swan. We believe that if either Julius is yellow, or Brian is gray, then Mary went to the kitchen.
hypothesis: There is a better than even chance that greg is a frog, and Gertrude is a wolf.
valid_hypothesis: Chances are slight that greg is a frog, and Gertrude is a wolf.
invalid_hypothesis: There is a better than even chance that greg is a frog, and Gertrude is a wolf.
hypothesis_assertion: Greg is a frog, and Gertrude is a wolf.