context: It is highly unlikely that Greg is green. It is likely that Mary moved to the garden. Chances are about even that Lily is yellow. It is highly likely that if Lily is yellow, and Mary moved to the garden, then Julius is a lion. Chances are about even that if Greg is green, or Mary moved to the garden, then Brian is a swan. It is probably not the case that if either Lily is yellow, or Greg is green, then John left the football.
hypothesis: It is probably not the case that john left the football, or Julius is a lion.
valid_hypothesis: It is probably not the case that john left the football, or Julius is a lion.
invalid_hypothesis: There is a very good chance that john left the football, or Julius is a lion.
hypothesis_assertion: John left the football, or Julius is a lion.