context: Chances are slight that Greg is a swan. It is highly unlikely that John left the football. It is almost certain that Mary moved to the garden. We doubt that if either John left the football, or Greg is a swan, then Julius is gray. There is little chance that if John left the football, and Greg is a swan, then Brian is yellow. It is probably the case that if John left the football, or Greg is a swan, then Lily is a lion.
hypothesis: Chances are slight that mary moved to the garden, and Lily is a lion.
valid_hypothesis: Chances are slight that mary moved to the garden, and Lily is a lion.
invalid_hypothesis: We believe that mary moved to the garden, and Lily is a lion.
hypothesis_assertion: Mary moved to the garden, and Lily is a lion.