Stir fry cook prepares food on grill.
A stir fry cook prepares food over a bonfire.
The grill is a device for cooking while the bonfire is simply wood and sticks.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_grill(x4) & Theme(e1,x3) & Actor(e1,x1) & v_prepare(e1) & n_food(x3) & n_cook(x1) & a_fry(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_stir(x2))
exists e1 p1 x1.(exists e2 s1 x2 x3 x4.(over(e2,x4) & n_bonfire(x4) & Theme(e2,x3) & Actor(e2,x2) & v_prepare(e2) & n_food(x3) & n_cook(x2) & a_fry(s1) & Theme(s1,x2)) & Topic(e1,p1) & Actor(e1,x1) & v_stir(e1) & n_a(x1))