context: It is impossible that Julius is white. It is probably the case that Bill is in the office. We doubt that Sandra left the football.
hypothesis: Chances are slight that bill is in the office, and Sandra left the football.
valid_hypothesis: Chances are slight that bill is in the office, and Sandra left the football.
invalid_hypothesis: It is almost certain that bill is in the office, and Sandra left the football.
hypothesis_assertion: Bill is in the office, and Sandra left the football.