Two construction workers doing their job.
Two construction workers lay cement for a foundation.
These workers are not necessarily laying cement for a foundation, even though they are construction workers.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_job(x3) & of(x3,x1) & n_thing(x1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_lay(e1) & for(x3,x4) & n_foundation(x4) & n_cement(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))