context: We believe that Greg is a lion. It is almost certain that Sumit is bored. It is impossible that Brian is a swan.
hypothesis: It is impossible that brian is a swan, and Sumit is bored.
valid_hypothesis: It is impossible that brian is a swan, and Sumit is bored.
invalid_hypothesis: It is certain that brian is a swan, and Sumit is bored.
hypothesis_assertion: Brian is a swan, and Sumit is bored.