The man is skateboarding on a large brick staircase.
Man skateboarding ahead go competition
There is no way to know if the man is in a competition.
exists e1 s1 x1 x2 x3.(n_man(x1) & on(e1,x2) & n_staircase(x2) & of(x2,x3) & n_brick(x3) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_skateboard(e1))
exists e2 e1 p1 x1 x2.(ne_nam_man(x1) & for(e1,e2) & exists s1.(Theme(s1,x1) & a_ahead(s1)) & Topic(e2,p1) & Actor(e2,x1) & v_skateboard(e2) & Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_competition(x2))