premise1: Group class for martial arts, some in uniform and some not, taking place in an outdoor facility.
premise2: Two shirtless men are sparring while a line of men in white shirts and black shorts watch.
premise3: A martial arts demonstration being watched by a group of men.
premise4: Large group of what look like martial artists practicing.
premise: Group class for martial arts, some in uniform and some not, taking place in an outdoor facility. Two shirtless men are sparring while a line of men in white shirts and black shorts watch. A martial arts demonstration being watched by a group of men. Large group of what look like martial artists practicing.
hypothesis: Onlookers watch.