context: It is improbable that Greg is a frog. It is unlikely that Julius is white. It is almost certain that Bill went to the kitchen.
hypothesis: It is likely that either Julius is white, or Greg is a frog.
valid_hypothesis: It is probably not the case that either Julius is white, or Greg is a frog.
invalid_hypothesis: It is likely that either Julius is white, or Greg is a frog.
hypothesis_assertion: Either Julius is white, or Greg is a frog.