context: It is probable that Daniel took the football. It is highly likely that Brian is yellow. It is highly unlikely that Emily is a sheep. Chances are about even that if Daniel took the football, or Brian is yellow, then Julius is yellow. Chances are slight that if Emily is a sheep, and Brian is yellow, then Greg is a swan. Chances are slight that if either Brian is yellow, or Daniel took the football, then Mary left the apple.
hypothesis: Chances are slight that emily is a sheep, or Mary left the apple.
valid_hypothesis: Chances are slight that emily is a sheep, or Mary left the apple.
invalid_hypothesis: We believe that emily is a sheep, or Mary left the apple.
hypothesis_assertion: Emily is a sheep, or Mary left the apple.