A man dressed in gray gear, including helmet, races a dirt bike on a dirt track.
The man is working.
Not every man racing a dirt bike is working.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & include(x1,x4) & all x6 x5.((n_bike(x5) & of(x5,x6) & n_dirt(x6)) -> exists x7 x8 x9.(rel(x4,x7) & on(x7,x8) & n_track(x8) & of(x8,x9) & n_dirt(x9) & for(x7,x5) & n_race(x7))) & n_helmet(x4) & in(e1,x3) & n_gear(x3) & a_gray(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_work(e1))