two women working on a yarn machine.
Two women are at their job.
at their job may not be the same as a yarn machine
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_machine(x3) & of(x3,x4) & n_yarn(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_woman(x1) & card_eq_2(x1))
exists p1 x1 x2.(at(x1,x2) & n_job(x2) & of(x2,x1) & n_thing(x1) & n_woman(x1) & card_eq_2(x1))