An man cooks on his grill at sunset.
A man is cooking steak on a grill.
Grills are not used for cooking steak alone.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & at(x3,x4) & n_sunset(x4) & n_grill(x3) & of(x3,x1) & n_male(x1) & n_cook(x1) & of(x1,x2) & n_man(x2))
exists p1 x1.(exists s1 x2 x3.((x1 = x2) & on(x2,x3) & n_grill(x3) & n_steak(x2) & a_cooking(s1) & Theme(s1,x2)) & n_man(x1))