context: It is unlikely that Julius is a rhino. It is highly likely that Bernhard is a swan. There is almost no chance that Fred moved to the office.
hypothesis: It is impossible that fred moved to the office, and Julius is a rhino.
valid_hypothesis: It is impossible that fred moved to the office, and Julius is a rhino.
invalid_hypothesis: It is certain that fred moved to the office, and Julius is a rhino.
hypothesis_assertion: Fred moved to the office, and Julius is a rhino.