context: There is a better than even chance that Brian is a swan. It is certain that Mary dropped the milk. It is impossible that Greg is yellow. There is almost no chance that if Greg is yellow, or Mary dropped the milk, then Emily is a cat. It is improbable that if Brian is a swan, or Mary dropped the milk, then Julius is a rhino. It is highly likely that if either Brian is a swan, or Mary dropped the milk, then John put down the apple.
hypothesis: There is a better than even chance that brian is a swan, or Julius is a rhino.
valid_hypothesis: There is a better than even chance that brian is a swan, or Julius is a rhino.
invalid_hypothesis: There is little chance that brian is a swan, or Julius is a rhino.
hypothesis_assertion: Brian is a swan, or Julius is a rhino.