context: It is certain that Greg is gray. There is a better than even chance that Brian is white. Chances are slight that John moved to the office. Chances are slight that if John moved to the office, or Greg is gray, then Bernhard is a swan. There is a better than even chance that if either Greg is gray, or Brian is white, then Mary left the milk. It is highly unlikely that if Brian is white, or Greg is gray, then Jessica is a sheep.
hypothesis: It is probable that bernhard is a swan, and John moved to the office.
valid_hypothesis: There is almost no chance that bernhard is a swan, and John moved to the office.
invalid_hypothesis: It is probable that bernhard is a swan, and John moved to the office.
hypothesis_assertion: Bernhard is a swan, and John moved to the office.