A race car driver in a Yamaha bicycle is turning on a racetrack.
A graffiti artist paints on a building wall.
The subject is either a driver in a bicycle, or a graffiti artist who paints a wall.
exists e1 x1 x2 x3 x4 x5 x6.(on(e1,x6) & n_racetrack(x6) & Actor(e1,x1) & v_turn(e1) & in(x1,x4) & n_bicycle(x4) & (x4 = x5) & ne_geo_yamaha(x5) & n_driver(x1) & of(x1,x3) & n_car(x3) & of(x1,x2) & n_race(x2))
exists s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_wall(x3) & of(x3,x4) & n_building(x4) & n_paint(x1) & of(x1,x2) & n_artist(x2) & a_graffiti(s1) & Theme(s1,x1))