Four men with a sunset in background.
The guys are going out for the night.
Men watching a sunset are not necessarily going out. They could be heading home after a day's work, for instance.
exists x1 x2 x3.(a_topic(x1) & with(x1,x2) & in(x2,x3) & n_background(x3) & n_sunset(x2) & n_man(x1) & card_eq_4(x1))
exists e1 s1 x1 x2.(n_night(x2) & n_guy(x1) & for(e1,x2) & a_out(s1) & Manner(e1,s1) & Actor(e1,x1) & v_go(e1))