Construction workers laying wall tile in a hallway.
Workers working on subway tunnel
Not all workers working on subway tunnels are construction workers.  Not all workers working on subway tunnel are laying wall tile. Not all workers working on subway tunnels are in a hallway.
exists e1 x1 x2 x3 x4 x5.(in(e1,x5) & n_hallway(x5) & Theme(e1,x3) & Actor(e1,x1) & v_lay(e1) & n_tile(x3) & of(x3,x4) & n_wall(x4) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 x1 x2 x3.(on(e1,x2) & n_tunnel(x2) & of(x2,x3) & n_subway(x3) & Actor(e1,x1) & v_work(e1) & n_worker(x1))