context: It is probable that Bernhard is a frog. Chances are slight that Yann is bored. There is a very good chance that Mary went to the bedroom.
hypothesis: Chances are about even that either Bernhard is a frog, or Mary went to the bedroom.
valid_hypothesis: Chances are about even that either Bernhard is a frog, or Mary went to the bedroom.
invalid_hypothesis: It is highly unlikely that either Bernhard is a frog, or Mary went to the bedroom.
hypothesis_assertion: Either Bernhard is a frog, or Mary went to the bedroom.