context: There is almost no chance that Greg is a frog. It is highly unlikely that Lily is green. It is improbable that Bernhard is a swan. It is probably not the case that if either Lily is green, or Greg is a frog, then Bill moved to the garden. There is a better than even chance that if Bernhard is a swan, and Lily is green, then John went to the hallway. It is probably the case that if Lily is green, and Greg is a frog, then Brian is yellow.
hypothesis: It is certain that bill moved to the garden, or Greg is a frog.
valid_hypothesis: There is almost no chance that bill moved to the garden, or Greg is a frog.
invalid_hypothesis: It is certain that bill moved to the garden, or Greg is a frog.
hypothesis_assertion: Bill moved to the garden, or Greg is a frog.