context: It is probably not the case that Mary moved to the garden. It is probable that Daniel got the milk. Chances are about even that Jeff dropped the apple.
hypothesis: Chances are about even that either Daniel got the milk, or Jeff dropped the apple.
valid_hypothesis: Chances are about even that either Daniel got the milk, or Jeff dropped the apple.
invalid_hypothesis: It is impossible that either Daniel got the milk, or Jeff dropped the apple.
hypothesis_assertion: Either Daniel got the milk, or Jeff dropped the apple.