A man stands upon his charcoal grill.
A man sitting next to a grill.
A man cannot be sitting while he stands.
exists e1 s1 x1 x2.(upon(e1,x2) & n_grill(x2) & a_charcoal(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & to(e1,x3) & n_grill(x3) & r_next(e1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))