context: There is a very good chance that Mary got the football. It is highly likely that John picked up the milk. There is a very good chance that Greg is a swan. It is almost certain that if Mary got the football, or John picked up the milk, then Bill went to the hallway. There is a very good chance that if Greg is a swan, or Mary got the football, then Bernhard is a swan. It is unlikely that if either John picked up the milk, or Mary got the football, then Lily is a lion.
hypothesis: There is a better than even chance that mary got the football, and Bernhard is a swan.
valid_hypothesis: There is a better than even chance that mary got the football, and Bernhard is a swan.
invalid_hypothesis: It is improbable that mary got the football, and Bernhard is a swan.
hypothesis_assertion: Mary got the football, and Bernhard is a swan.