context: It is probably not the case that Brian is a swan. It is probably not the case that Julius is green. It is probably the case that Greg is a rhino. It is probably not the case that if Greg is a rhino, or Julius is green, then John discarded the milk. There is almost no chance that if Brian is a swan, or Julius is green, then Lily is a frog. Chances are slight that if either Brian is a swan, or Greg is a rhino, then Mary dropped the milk.
hypothesis: There is almost no chance that mary dropped the milk, and John discarded the milk.
valid_hypothesis: There is almost no chance that mary dropped the milk, and John discarded the milk.
invalid_hypothesis: It is probably the case that mary dropped the milk, and John discarded the milk.
hypothesis_assertion: Mary dropped the milk, and John discarded the milk.