context: Chances are about even that John moved to the office. There is little chance that Julius is gray. It is unlikely that Sandra grabbed the milk. It is likely that if Julius is gray, and Sandra grabbed the milk, then Greg is green. It is unlikely that if Sandra grabbed the milk, or John moved to the office, then Brian is a frog. There is a very good chance that if Julius is gray, and John moved to the office, then Mary went to the garden.
hypothesis: Chances are about even that either John moved to the office, or Greg is green.
valid_hypothesis: Chances are about even that either John moved to the office, or Greg is green.
invalid_hypothesis: It is almost certain that either John moved to the office, or Greg is green.
hypothesis_assertion: Either John moved to the office, or Greg is green.