A chef cooking at a hibachi grill.
A chef cooks at a grill because he is hungry.
just because a chef cooking doesn't mean he is hungry,
exists x1 x2 x3 x4.(a_topic(x1) & at(x1,x3) & n_grill(x3) & of(x3,x4) & n_hibachus(x4) & n_cooking(x1) & of(x1,x2) & n_chef(x2))
(-x)