context: There is a very good chance that Mary dropped the milk. It is almost certain that John picked up the apple. It is probably the case that Bill went to the garden.
hypothesis: It is probable that either John picked up the apple, or Bill went to the garden.
valid_hypothesis: It is probably not the case that either John picked up the apple, or Bill went to the garden.
invalid_hypothesis: It is probable that either John picked up the apple, or Bill went to the garden.
hypothesis_assertion: Either John picked up the apple, or Bill went to the garden.