A pair of office workers are diligently performing their tasks on messy desks.
nobody is at work
The workers could not be performing their tasks if nobody is at work because they need to be there to do their job.
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 p1 x1.(exists x2.(at(x1,x2) & n_work(x2)) & n_person(x1))