context: We doubt that Greg is gray. It is unlikely that John left the football. There is a very good chance that Emily is a wolf. It is unlikely that if either John left the football, or Emily is a wolf, then Bernhard is a swan. It is certain that if either John left the football, or Emily is a wolf, then Julius is a swan. It is probably the case that if Greg is gray, and Emily is a wolf, then Lily is white.
hypothesis: It is impossible that either Emily is a wolf, or Greg is gray.
valid_hypothesis: It is probable that either Emily is a wolf, or Greg is gray.
invalid_hypothesis: It is impossible that either Emily is a wolf, or Greg is gray.
hypothesis_assertion: Either Emily is a wolf, or Greg is gray.