context: It is highly likely that Greg is a swan. It is certain that John went to the office. It is highly likely that Brian is green.
hypothesis: It is certain that john went to the office, or Greg is a swan.
valid_hypothesis: It is certain that john went to the office, or Greg is a swan.
invalid_hypothesis: Chances are about even that john went to the office, or Greg is a swan.
hypothesis_assertion: John went to the office, or Greg is a swan.