context: We doubt that Brian is yellow. Chances are about even that Lily is gray. It is certain that John discarded the milk. There is a better than even chance that if John discarded the milk, or Brian is yellow, then Bill moved to the garden. Chances are slight that if Lily is gray, or Brian is yellow, then Mary got the football. There is a better than even chance that if Brian is yellow, or John discarded the milk, then Fred is in the park.
hypothesis: There is a better than even chance that mary got the football, or Bill moved to the garden.
valid_hypothesis: There is a better than even chance that mary got the football, or Bill moved to the garden.
invalid_hypothesis: It is improbable that mary got the football, or Bill moved to the garden.
hypothesis_assertion: Mary got the football, or Bill moved to the garden.