context: It is probable that John went to the kitchen. It is probable that Brian is a rhino. It is certain that Lily is green.
hypothesis: Chances are about even that either Brian is a rhino, or John went to the kitchen.
valid_hypothesis: Chances are about even that either Brian is a rhino, or John went to the kitchen.
invalid_hypothesis: It is almost certain that either Brian is a rhino, or John went to the kitchen.
hypothesis_assertion: Either Brian is a rhino, or John went to the kitchen.