context: It is unlikely that John went to the garden. It is probably the case that Mary is in the hallway. It is probably the case that Julius is a swan.
hypothesis: It is improbable that either John went to the garden, or Mary is in the hallway.
valid_hypothesis: There is a better than even chance that either John went to the garden, or Mary is in the hallway.
invalid_hypothesis: It is improbable that either John went to the garden, or Mary is in the hallway.
hypothesis_assertion: Either John went to the garden, or Mary is in the hallway.