context: A guy taking a nap in the back of a vehicle.
hypothesis: It is highly unlikely that a man is dozing off while bumming a ride in the back of a truck.
valid_hypothesis: It is highly unlikely that a man is dozing off while bumming a ride in the back of a truck.
invalid_hypothesis: It is likely that a man is dozing off while bumming a ride in the back of a truck.
hypothesis_assertion: A man is dozing off while bumming a ride in the back of a truck.