A skateboarding kid doing an ollie.
A child rides a skateboard.
A child implies a kid that is younger.
exists e1 e2 x1 x2 x3.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_do(e2) & n_ollie(x3) & (x1 = x2) & n_kid(x1) & Actor(e1,x1) & v_skateboard(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x2) & n_child(x1))