context: It is impossible that Brian is a swan. There is almost no chance that Daniel left the apple. It is highly likely that Mary went to the garden. There is almost no chance that if Daniel left the apple, or Brian is a swan, then Bernhard is a frog. It is unlikely that if Daniel left the apple, and Brian is a swan, then John put down the milk. We believe that if Brian is a swan, or Daniel left the apple, then Greg is a rhino.
hypothesis: There is almost no chance that either Greg is a rhino, or Brian is a swan.
valid_hypothesis: There is almost no chance that either Greg is a rhino, or Brian is a swan.
invalid_hypothesis: It is probable that either Greg is a rhino, or Brian is a swan.
hypothesis_assertion: Either Greg is a rhino, or Brian is a swan.