context: It is probably not the case that Greg is a lion. It is almost certain that Mary dropped the milk. It is highly likely that Brian is a swan.
hypothesis: It is probable that brian is a swan, and Greg is a lion.
valid_hypothesis: It is probably not the case that brian is a swan, and Greg is a lion.
invalid_hypothesis: It is probable that brian is a swan, and Greg is a lion.
hypothesis_assertion: Brian is a swan, and Greg is a lion.