context: A skateboarder is performing a grab trick while hovering above a ramp, which is located within a city.
hypothesis: It is highly unlikely that a skateboarder is at a skatepark with his friends showing off his moves.
valid_hypothesis: We believe that a skateboarder is at a skatepark with his friends showing off his moves.
invalid_hypothesis: It is highly unlikely that a skateboarder is at a skatepark with his friends showing off his moves.
hypothesis_assertion: A skateboarder is at a skatepark with his friends showing off his moves.