A kid is skateboarding in the suburbs.
A kid is riding his skateboard.
Riding his skateboarding is a rephrase of Skateboarding.
exists e1 x1 x2.(n_suburb(x2) & in(e1,x2) & Actor(e1,x1) & v_skateboard(e1) & n_kid(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x2) & of(x2,x1) & n_male(x1) & n_kid(x1))