context: Chances are slight that Mary went to the garden. There is almost no chance that Bernhard is a frog. It is certain that Brian is a rhino.
hypothesis: There is almost no chance that brian is a rhino, and Bernhard is a frog.
valid_hypothesis: There is almost no chance that brian is a rhino, and Bernhard is a frog.
invalid_hypothesis: There is a better than even chance that brian is a rhino, and Bernhard is a frog.
hypothesis_assertion: Brian is a rhino, and Bernhard is a frog.