context: There is a very good chance that Julius is green. It is highly likely that Mary dropped the apple. It is probably the case that John went to the garden.
hypothesis: It is certain that either John went to the garden, or Julius is green.
valid_hypothesis: Chances are about even that either John went to the garden, or Julius is green.
invalid_hypothesis: It is certain that either John went to the garden, or Julius is green.
hypothesis_assertion: Either John went to the garden, or Julius is green.