Workers are setting-up to work in the London tubes.
The workers are working in london.
Workers setting-up work in london implies they are working in london
exists p1 s1 x1 x2 x3.(n_tube(x2) & (x2 = x3) & ne_geo_london(x3) & Topic(s1,p1) & Actor(s1,x1) & a_setting-up(s1) & exists e1.(in(e1,x2) & Actor(e1,x1) & v_work(e1)) & n_worker(x1))
exists e1 x1 x2.(n_worker(x1) & in(e1,x2) & n_london(x2) & Actor(e1,x1) & v_work(e1))