Workers in a kitchen at a restaurant are visible through a storefront window.
The cooks are preparing for lunch service.
Workers  doesn't always mean  lunch
exists s1 x1 x2 x3 x4 x5.(through(s1,x4) & n_window(x4) & of(x4,x5) & n_storefront(x5) & Theme(s1,x1) & a_visible(s1) & in(x1,x2) & at(x2,x3) & n_restaurant(x3) & n_kitchen(x2) & n_worker(x1))
exists e1 x1 x2 x3.(n_cook(x1) & for(e1,x2) & n_service(x2) & of(x2,x3) & n_lunch(x3) & Actor(e1,x1) & v_prepare(e1))