The boy is skateboarding on the bench by the fence.
The kid is showing out for friends by doing tricks on a skateboard.
A boy skateboarding on a bench may have no intention of showing out for friends by doing tricks.
exists e1 x1 x2 x3.(n_fence(x3) & n_bench(x2) & n_boy(x1) & by(e1,x3) & on(e1,x2) & Actor(e1,x1) & v_skateboard(e1))
exists e1 e2 s1 x1 x2 x3 x4.(n_kid(x1) & by(e1,e2) & on(e2,x4) & n_skateboard(x4) & Theme(e2,x3) & Actor(e2,x1) & v_do(e2) & n_trick(x3) & a_out(s1) & Manner(e1,s1) & for(e1,x2) & n_friend(x2) & Actor(e1,x1) & v_show(e1))