context: Chances are slight that Gertrude is a wolf. Chances are slight that Mary is in the park. It is impossible that Jeff went to the garden. It is probably not the case that if Jeff went to the garden, and Gertrude is a wolf, then Brian is green. It is unlikely that if Jeff went to the garden, or Gertrude is a wolf, then Julius is a rhino. There is a better than even chance that if either Mary is in the park, or Jeff went to the garden, then Bernhard is a frog.
hypothesis: It is certain that gertrude is a wolf, or Brian is green.
valid_hypothesis: There is little chance that gertrude is a wolf, or Brian is green.
invalid_hypothesis: It is certain that gertrude is a wolf, or Brian is green.
hypothesis_assertion: Gertrude is a wolf, or Brian is green.