context: Chances are slight that Lily is white. It is unlikely that Greg is a swan. It is improbable that Mary put down the apple.
hypothesis: It is almost certain that mary put down the apple, or Greg is a swan.
valid_hypothesis: It is probably not the case that mary put down the apple, or Greg is a swan.
invalid_hypothesis: It is almost certain that mary put down the apple, or Greg is a swan.
hypothesis_assertion: Mary put down the apple, or Greg is a swan.