context: It is highly unlikely that Brian is a rhino. Chances are slight that Julius is a frog. We doubt that Bernhard is gray.
hypothesis: Chances are slight that brian is a rhino, or Julius is a frog.
valid_hypothesis: Chances are slight that brian is a rhino, or Julius is a frog.
invalid_hypothesis: There is a better than even chance that brian is a rhino, or Julius is a frog.
hypothesis_assertion: Brian is a rhino, or Julius is a frog.