Two construction workers in green helmets are at work.
Two workers are shown on lunch break.
If workers are on their lunch break then they are not currently at work.
exists p1 s1 x1 x2 x3.(exists x4.(at(x1,x4) & n_work(x4)) & in(x1,x3) & n_helmet(x3) & a_green(s1) & Theme(s1,x3) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2 x3.(on(e1,x2) & n_break(x2) & of(x2,x3) & n_lunch(x3) & Theme(e1,x1) & v_show(e1) & n_worker(x1) & card_eq_2(x1))