Firefighters relax after responding to an emergency.
Two firefighters sit on the sidewalk covered in smoke.
There is no indication of the number of firefighters. Relaxing does not require that one sit on the sidewalk.
exists e2 e1 x1 x2.(after(e1,e2) & to(e2,x2) & n_emergency(x2) & Actor(e2,x1) & v_respond(e2) & Actor(e1,x1) & v_relax(e1) & n_firefighter(x1))
exists e1 e2 x1 x2 x3 x4.(n_sidewalk(x2) & on(e1,x2) & in(e2,x4) & n_smoke(x4) & Theme(e2,x3) & v_cover(e2) & (x2 = x3) & Actor(e1,x1) & v_sit(e1) & n_firefighter(x1) & card_eq_2(x1))