context: Chances are slight that Bernhard is a swan. We believe that Greg is gray. It is almost certain that Mary went to the office.
hypothesis: It is probably the case that mary went to the office, and Greg is gray.
valid_hypothesis: It is probably the case that mary went to the office, and Greg is gray.
invalid_hypothesis: It is highly unlikely that mary went to the office, and Greg is gray.
hypothesis_assertion: Mary went to the office, and Greg is gray.