Factory workers are steadily completing their jobs.
Workers are assembling cars.
Factory workers aren't always assembling cars.
exists e1 s1 x1 x2 x3.(a_steadily(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_complete(e1) & n_job(x3) & of(x3,x1) & n_thing(x1) & n_worker(x1) & of(x1,x2) & n_factory(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_assemble(e1) & n_car(x2) & n_worker(x1))