context: Two uniformed police officers are standing on a sidewalk while one child looks directly at the camera.
hypothesis: It is certain that two cops are protecting a child on the sidewalk.
valid_hypothesis: It is probably not the case that two cops are protecting a child on the sidewalk.
invalid_hypothesis: It is certain that two cops are protecting a child on the sidewalk.
hypothesis_assertion: Two cops are protecting a child on the sidewalk.