context: Chances are slight that Julius is a swan. It is almost certain that Sandra is in the hallway. Chances are about even that Julie moved to the park.
hypothesis: We doubt that either Sandra is in the hallway, or Julius is a swan.
valid_hypothesis: It is highly likely that either Sandra is in the hallway, or Julius is a swan.
invalid_hypothesis: We doubt that either Sandra is in the hallway, or Julius is a swan.
hypothesis_assertion: Either Sandra is in the hallway, or Julius is a swan.