context: Chances are about even that John went to the garden. It is improbable that Bill is in the school. It is highly likely that Brian is white.
hypothesis: Chances are about even that brian is white, and John went to the garden.
valid_hypothesis: Chances are about even that brian is white, and John went to the garden.
invalid_hypothesis: It is almost certain that brian is white, and John went to the garden.
hypothesis_assertion: Brian is white, and John went to the garden.