context: There is a very good chance that Brian is a lion. It is unlikely that Greg is a swan. It is improbable that John is in the office.
hypothesis: It is probably not the case that either Greg is a swan, or John is in the office.
valid_hypothesis: It is probably not the case that either Greg is a swan, or John is in the office.
invalid_hypothesis: It is likely that either Greg is a swan, or John is in the office.
hypothesis_assertion: Either Greg is a swan, or John is in the office.