context: It is highly likely that Julius is a swan. It is probably not the case that John got the apple. There is a very good chance that Sandra left the milk. It is highly unlikely that if either John got the apple, or Julius is a swan, then Greg is yellow. It is probable that if John got the apple, or Julius is a swan, then Mary took the milk. It is highly unlikely that if Sandra left the milk, and Julius is a swan, then Bernhard is a lion.
hypothesis: It is almost certain that john got the apple, or Julius is a swan.
valid_hypothesis: It is almost certain that john got the apple, or Julius is a swan.
invalid_hypothesis: We doubt that john got the apple, or Julius is a swan.
hypothesis_assertion: John got the apple, or Julius is a swan.