A teenage boy does tricks on his bicycle.
Hes tricks are very impressive.
teenage boy does tricks on his bicycle may not be necessarily impressive
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_bicycle(x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_trick(x3) & n_boy(x1) & of(x1,x2) & n_teenage(x2))
exists s1 x1 x2.(r_very(s1) & Theme(s1,x1) & a_impressive(s1) & n_trick(x1) & (x1 = x2) & ne_per_hes(x2))