context: It is probably not the case that Julius is a swan. There is a very good chance that Daniel dropped the milk. Chances are slight that Brian is a rhino. Chances are slight that if either Daniel dropped the milk, or Julius is a swan, then Mary moved to the garden. We believe that if Julius is a swan, or Daniel dropped the milk, then Bernhard is a frog. There is a better than even chance that if Daniel dropped the milk, or Brian is a rhino, then John went to the hallway.
hypothesis: It is probably not the case that either Julius is a swan, or Mary moved to the garden.
valid_hypothesis: It is probably not the case that either Julius is a swan, or Mary moved to the garden.
invalid_hypothesis: It is highly likely that either Julius is a swan, or Mary moved to the garden.
hypothesis_assertion: Either Julius is a swan, or Mary moved to the garden.