A pair of office workers are diligently performing their tasks on messy desks.
A couple of office workers are cleaning up their messy desks
Just because a pair of office workers are diligently performing their tasks on messy desks does not mean workers are cleaning up their messy desks.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_diligently(s2) & Manner(e1,s2) & on(e1,x5) & n_desk(x5) & a_messy(s1) & Theme(s1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_perform(e1) & n_task(x4) & of(x4,x1) & n_thing(x1) & of(x1,x2) & n_worker(x2) & of(x2,x3) & n_office(x3) & n_pair(x1))
exists e1 s1 s2 x1 x2 x3 x4.(a_up(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x1) & v_clean(e1) & n_desk(x4) & a_messy(s1) & Theme(s1,x4) & of(x4,x1) & n_thing(x1) & of(x1,x2) & n_worker(x2) & of(x2,x3) & n_office(x3) & n_couple(x1))