context: It is highly unlikely that Bernhard is a swan. There is little chance that Julius is a frog. There is a very good chance that Sandra took the milk. It is unlikely that if Julius is a frog, or Sandra took the milk, then Sumit is bored. It is unlikely that if Julius is a frog, and Bernhard is a swan, then Brian is a rhino. There is almost no chance that if Julius is a frog, or Sandra took the milk, then Lily is a frog.
hypothesis: It is impossible that brian is a rhino, and Sumit is bored.
valid_hypothesis: It is impossible that brian is a rhino, and Sumit is bored.
invalid_hypothesis: It is certain that brian is a rhino, and Sumit is bored.
hypothesis_assertion: Brian is a rhino, and Sumit is bored.