context: There is little chance that Brian is a rhino. Chances are slight that Jeff put down the apple. It is impossible that Julius is a swan.
hypothesis: There is a better than even chance that either Brian is a rhino, or Julius is a swan.
valid_hypothesis: It is improbable that either Brian is a rhino, or Julius is a swan.
invalid_hypothesis: There is a better than even chance that either Brian is a rhino, or Julius is a swan.
hypothesis_assertion: Either Brian is a rhino, or Julius is a swan.