A kid is doing a skateboard trick at a skate park.
There is a hard surface in the photo.
A skate park is a hard surface most definitely.
exists e1 x1 x2 x3 x4 x5.(at(e1,x4) & n_park(x4) & of(x4,x5) & n_skate(x5) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & of(x2,x3) & n_skateboard(x3) & n_kid(x1))
exists p1 x1 x3.(n_photo(x3) & exists s1 x2.((x1 = x2) & in(x2,x3) & n_surface(x2) & a_hard(s1) & Theme(s1,x2)))