context: There is a better than even chance that Lily is a rhino. There is little chance that Brian is gray. We believe that Jeff went to the kitchen. It is almost certain that if Jeff went to the kitchen, or Brian is gray, then Emily is a cat. It is unlikely that if Lily is a rhino, or Jeff went to the kitchen, then Mary dropped the milk. It is improbable that if either Lily is a rhino, or Brian is gray, then John picked up the apple.
hypothesis: There is almost no chance that either Emily is a cat, or Brian is gray.
valid_hypothesis: There is a better than even chance that either Emily is a cat, or Brian is gray.
invalid_hypothesis: There is almost no chance that either Emily is a cat, or Brian is gray.
hypothesis_assertion: Either Emily is a cat, or Brian is gray.