context: It is likely that Lily is a frog. Chances are about even that Greg is yellow. It is improbable that John moved to the office. It is probable that if Greg is yellow, and John moved to the office, then Julius is green. It is impossible that if Lily is a frog, or John moved to the office, then Bernhard is white. There is a very good chance that if Greg is yellow, or John moved to the office, then Brian is a lion.
hypothesis: Chances are about even that either John moved to the office, or Brian is a lion.
valid_hypothesis: Chances are about even that either John moved to the office, or Brian is a lion.
invalid_hypothesis: It is impossible that either John moved to the office, or Brian is a lion.
hypothesis_assertion: Either John moved to the office, or Brian is a lion.