context: There is little chance that Greg is a lion. We believe that Yann is bored. It is probable that Mary dropped the milk.
hypothesis: We believe that mary dropped the milk, and Greg is a lion.
valid_hypothesis: It is highly unlikely that mary dropped the milk, and Greg is a lion.
invalid_hypothesis: We believe that mary dropped the milk, and Greg is a lion.
hypothesis_assertion: Mary dropped the milk, and Greg is a lion.