context: It is almost certain that Fred went to the office. There is almost no chance that Lily is yellow. Chances are about even that Julius is white.
hypothesis: It is impossible that fred went to the office, and Julius is white.
valid_hypothesis: Chances are about even that fred went to the office, and Julius is white.
invalid_hypothesis: It is impossible that fred went to the office, and Julius is white.
hypothesis_assertion: Fred went to the office, and Julius is white.