context: There is almost no chance that Sandra left the milk. It is impossible that Daniel took the football. It is unlikely that Greg is a swan. We believe that if Sandra left the milk, and Greg is a swan, then Lily is a lion. It is certain that if either Sandra left the milk, or Greg is a swan, then John moved to the garden. There is a very good chance that if Sandra left the milk, and Daniel took the football, then Brian is gray.
hypothesis: It is highly likely that brian is gray, and Sandra left the milk.
valid_hypothesis: It is impossible that brian is gray, and Sandra left the milk.
invalid_hypothesis: It is highly likely that brian is gray, and Sandra left the milk.
hypothesis_assertion: Brian is gray, and Sandra left the milk.