context: It is probably not the case that Brian is a swan. It is improbable that Bernhard is gray. It is certain that John went to the garden.
hypothesis: It is certain that john went to the garden, or Brian is a swan.
valid_hypothesis: It is certain that john went to the garden, or Brian is a swan.
invalid_hypothesis: It is improbable that john went to the garden, or Brian is a swan.
hypothesis_assertion: John went to the garden, or Brian is a swan.