context: There is a better than even chance that Lily is a rhino. It is improbable that Brian is a swan. It is probably not the case that Mary dropped the apple.
hypothesis: There is a better than even chance that either Lily is a rhino, or Brian is a swan.
valid_hypothesis: There is a better than even chance that either Lily is a rhino, or Brian is a swan.
invalid_hypothesis: There is little chance that either Lily is a rhino, or Brian is a swan.
hypothesis_assertion: Either Lily is a rhino, or Brian is a swan.