context: It is probable that Lily is a frog. There is little chance that Greg is gray. There is a very good chance that Bill went to the office.
hypothesis: We believe that either Greg is gray, or Bill went to the office.
valid_hypothesis: We believe that either Greg is gray, or Bill went to the office.
invalid_hypothesis: It is probably not the case that either Greg is gray, or Bill went to the office.
hypothesis_assertion: Either Greg is gray, or Bill went to the office.