context: A person just about to stand up while water-skiing, while people in the background watch and take photos.
hypothesis: It is probably not the case that the person water-skiing is about to hit a big wave.
valid_hypothesis: It is probably not the case that the person water-skiing is about to hit a big wave.
invalid_hypothesis: It is probably the case that the person water-skiing is about to hit a big wave.
hypothesis_assertion: The person water-skiing is about to hit a big wave.