A guy doing a skateboarding trick in a city.
Guy skateboarding, doing a trick.
if there is a guy dong a skateboarding trick, he must be skateboarding
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_do(e2) & in(x3,x4) & n_city(x4) & n_trick(x3) & Actor(e1,x3) & v_skateboard(e1) & (x1 = x2) & n_guy(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_trick(x4) & (x1 = x3) & n_skateboarding(x1) & (x1 = x2) & ne_nam_guy(x2))