At a construction site, three men in helmets are at work on foot, while a third is visible inside a construction vehicle.
people build mall
Not all construction sites are build mall.
exists p1 p2 x1 x2 x3 x4.(at(p1,x3) & n_site(x3) & of(x3,x4) & n_construction(x4) & exists s1 x7 x8 x9.(inside(s1,x8) & n_vehicle(x8) & of(x8,x9) & n_construction(x9) & Theme(s1,x7) & a_visible(s1) & n_third(x7)) & while(p1,p2) & exists x5 x6.(at(x1,x5) & on(x5,x6) & n_foot(x6) & n_work(x5)) & in(x1,x2) & n_helmet(x2) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_mall(x2) & n_people(x1))