context: It is probable that John went to the hallway. It is impossible that Sandra left the football. It is probably the case that Greg is a swan. There is almost no chance that if Sandra left the football, and John went to the hallway, then Fred dropped the apple. It is likely that if either Sandra left the football, or Greg is a swan, then Brian is green. It is probably the case that if Greg is a swan, and Sandra left the football, then Lily is a lion.
hypothesis: There is a better than even chance that lily is a lion, and Sandra left the football.
valid_hypothesis: It is impossible that lily is a lion, and Sandra left the football.
invalid_hypothesis: There is a better than even chance that lily is a lion, and Sandra left the football.
hypothesis_assertion: Lily is a lion, and Sandra left the football.