context: It is highly likely that John went to the garden. It is improbable that Bernhard is green. Chances are about even that Bill is in the park.
hypothesis: Chances are about even that either John went to the garden, or Bill is in the park.
valid_hypothesis: Chances are about even that either John went to the garden, or Bill is in the park.
invalid_hypothesis: It is almost certain that either John went to the garden, or Bill is in the park.
hypothesis_assertion: Either John went to the garden, or Bill is in the park.