Two construction workers leaning against the guard rail of a construction site.
The workers are sitting on the ground.
The workers cannot be leaning against the guard rail and sitting on the ground simultaneously.
exists e1 x1 x2 x3 x4 x5 x6.(n_rail(x3) & of(x3,x4) & n_guard(x4) & against(e1,x3) & of(x3,x5) & n_site(x5) & of(x5,x6) & n_construction(x6) & Actor(e1,x1) & v_lean(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_ground(x2) & n_worker(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))