context: It is unlikely that Julius is a swan. Chances are slight that Brian is a frog. It is probable that Bernhard is white.
hypothesis: There is a very good chance that brian is a frog, and Julius is a swan.
valid_hypothesis: There is almost no chance that brian is a frog, and Julius is a swan.
invalid_hypothesis: There is a very good chance that brian is a frog, and Julius is a swan.
hypothesis_assertion: Brian is a frog, and Julius is a swan.