A chef cooking at a hibachi grill.
A cook grilling beef at a hibachi grill
just because a chef is cooking at a hibachi grill doesn't mean he is grilling beef
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))
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & n_grill(x4) & of(x4,x5) & n_hibachus(x5) & Theme(e1,x3) & Actor(e1,x2) & v_grill(e1) & n_beef(x3) & (x1 = x2) & n_cook(x1))