context: Chances are about even that John moved to the office. It is unlikely that Brian is a swan. It is unlikely that Greg is a frog. It is highly unlikely that if either Greg is a frog, or John moved to the office, then Julius is white. It is probably not the case that if Brian is a swan, or Greg is a frog, then Bernhard is a lion. We doubt that if either Brian is a swan, or Greg is a frog, then Mary went to the bedroom.
hypothesis: It is highly likely that greg is a frog, or Julius is white.
valid_hypothesis: It is unlikely that greg is a frog, or Julius is white.
invalid_hypothesis: It is highly likely that greg is a frog, or Julius is white.
hypothesis_assertion: Greg is a frog, or Julius is white.