City workers doing repairs.
The workers are making repairs.
Making repairs is a form of doing repairs.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_repair(x4) & (x1 = x3) & n_worker(x1) & (x1 = x2) & ne_geo_city(x2))
exists e1 x1 x2.(n_worker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_repair(x2))