A man toasts buns behind the counter of a restaurant.
A man at a restaurant.
Both sentences mention a man at a restaurant, sentence 2 is simplified from sentence 1.
exists e1 x1 x2 x3 x4.(n_counter(x3) & behind(e1,x3) & of(x3,x4) & n_restaurant(x4) & Theme(e1,x2) & Actor(e1,x1) & v_toast(e1) & n_bun(x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_restaurant(x2) & n_man(x1))