context: It is likely that Julius is a swan. There is a very good chance that Greg is white. It is improbable that Bill is in the office.
hypothesis: There is little chance that bill is in the office, or Julius is a swan.
valid_hypothesis: We believe that bill is in the office, or Julius is a swan.
invalid_hypothesis: There is little chance that bill is in the office, or Julius is a swan.
hypothesis_assertion: Bill is in the office, or Julius is a swan.