context: We believe that Brian is a lion. We believe that John dropped the apple. It is certain that Lily is a swan.
hypothesis: There is a very good chance that either Lily is a swan, or John dropped the apple.
valid_hypothesis: It is probably not the case that either Lily is a swan, or John dropped the apple.
invalid_hypothesis: There is a very good chance that either Lily is a swan, or John dropped the apple.
hypothesis_assertion: Either Lily is a swan, or John dropped the apple.