The in-line skater slides down the wall.
The roller blader fwll down the wall.
A roller blader is an in-line skater.
exists e1 s1 s2 x1 x2.(n_wall(x2) & n_skater(x1) & a_in-line(s1) & Theme(s1,x1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_slide(e1))
exists x1 x2 x3 x4.(n_wall(x4) & n_fwll(x1) & of(x1,x3) & n_blader(x3) & of(x1,x2) & n_roller(x2) & a_topic(x1) & down(x1,x4))