context: It is certain that Sandra left the milk. It is probable that Greg is a swan. It is probable that Brian is yellow. It is likely that if Sandra left the milk, and Brian is yellow, then Julius is a frog. It is probably the case that if either Brian is yellow, or Greg is a swan, then Mary got the apple. It is unlikely that if Brian is yellow, and Greg is a swan, then Jeff discarded the milk.
hypothesis: Chances are about even that either Jeff discarded the milk, or Mary got the apple.
valid_hypothesis: Chances are about even that either Jeff discarded the milk, or Mary got the apple.
invalid_hypothesis: It is highly unlikely that either Jeff discarded the milk, or Mary got the apple.
hypothesis_assertion: Either Jeff discarded the milk, or Mary got the apple.