context: It is likely that Daniel grabbed the milk. There is almost no chance that Brian is a lion. It is likely that Julius is a frog. It is almost certain that if Daniel grabbed the milk, or Julius is a frog, then Greg is yellow. It is likely that if Julius is a frog, or Brian is a lion, then John moved to the office. It is probably not the case that if either Brian is a lion, or Daniel grabbed the milk, then Lily is a rhino.
hypothesis: It is highly unlikely that john moved to the office, and Greg is yellow.
valid_hypothesis: Chances are about even that john moved to the office, and Greg is yellow.
invalid_hypothesis: It is highly unlikely that john moved to the office, and Greg is yellow.
hypothesis_assertion: John moved to the office, and Greg is yellow.