A pair of office workers are diligently performing their tasks on messy desks.
Two workers are lighting fireworks in the office.
Lighting fireworks in an office environment, which we can infer is indoors, constitutes dangerous behavior possibly leading to a fire and couldn't be thought of as diligently performing their tasks.
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 x1 x2 x3.(n_office(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_light(e1) & n_firework(x2) & n_worker(x1) & card_eq_2(x1))