City working performing maintenance on public transportation.
Public transportatioin needs fixed.
Not every maintenance of public transportation needs to happen.
exists e2 e1 s1 x1 x2 x3.(ne_geo_city(x1) & for(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_perform(e2) & on(x2,x3) & n_transportation(x3) & a_public(s1) & Theme(s1,x3) & n_maintenance(x2) & Actor(e1,x1) & v_work(e1))
exists e2 e1 x1 x2 x3.(ne_per_transportatioin(x1) & (x1 = x2) & ne_per_public(x2) & for(e1,e2) & Theme(e2,x1) & v_fix(e2) & Theme(e1,x3) & Actor(e1,x1) & v_need(e1) & n_thing(x3))