context: Chances are slight that Daniel put down the milk. It is probably not the case that Greg is a swan. It is probably not the case that Mary left the football.
hypothesis: It is highly likely that either Greg is a swan, or Daniel put down the milk.
valid_hypothesis: It is probably not the case that either Greg is a swan, or Daniel put down the milk.
invalid_hypothesis: It is highly likely that either Greg is a swan, or Daniel put down the milk.
hypothesis_assertion: Either Greg is a swan, or Daniel put down the milk.