context: It is highly unlikely that Sandra got the football. There is almost no chance that Brian is a swan. It is probably not the case that Greg is a lion.
hypothesis: It is probably not the case that either Brian is a swan, or Greg is a lion.
valid_hypothesis: It is probably not the case that either Brian is a swan, or Greg is a lion.
invalid_hypothesis: It is almost certain that either Brian is a swan, or Greg is a lion.
hypothesis_assertion: Either Brian is a swan, or Greg is a lion.