context: Chances are slight that Julius is a swan. It is impossible that John left the football. There is a better than even chance that Greg is a rhino. It is unlikely that if John left the football, or Greg is a rhino, then Sandra got the apple. It is impossible that if Greg is a rhino, and John left the football, then Brian is gray. There is a better than even chance that if either John left the football, or Julius is a swan, then Lily is a lion.
hypothesis: It is probable that brian is gray, and Lily is a lion.
valid_hypothesis: It is impossible that brian is gray, and Lily is a lion.
invalid_hypothesis: It is probable that brian is gray, and Lily is a lion.
hypothesis_assertion: Brian is gray, and Lily is a lion.