context: It is improbable that Sandra put down the milk. There is a very good chance that Julius is a swan. There is a very good chance that Bernhard is a swan. We doubt that if Bernhard is a swan, or Julius is a swan, then Bill moved to the garden. There is almost no chance that if Sandra put down the milk, or Julius is a swan, then Lily is white. It is impossible that if Sandra put down the milk, or Julius is a swan, then John took the apple.
hypothesis: It is probable that either Bill moved to the garden, or Julius is a swan.
valid_hypothesis: It is probable that either Bill moved to the garden, or Julius is a swan.
invalid_hypothesis: It is impossible that either Bill moved to the garden, or Julius is a swan.
hypothesis_assertion: Either Bill moved to the garden, or Julius is a swan.