context: It is highly likely that Sandra got the apple. Chances are about even that John went to the hallway. It is almost certain that Brian is a rhino. It is highly unlikely that if John went to the hallway, or Brian is a rhino, then Bill moved to the office. It is certain that if John went to the hallway, or Brian is a rhino, then Lily is yellow. We doubt that if John went to the hallway, or Brian is a rhino, then Emily is a wolf.
hypothesis: There is a better than even chance that john went to the hallway, or Emily is a wolf.
valid_hypothesis: There is a better than even chance that john went to the hallway, or Emily is a wolf.
invalid_hypothesis: It is impossible that john went to the hallway, or Emily is a wolf.
hypothesis_assertion: John went to the hallway, or Emily is a wolf.