A firefighter responding to a car fire.
A car is on fire.
A car is on fire is a rephrasing for a car fire.
exists e1 x1 x2 x3 x4.(a_topic(x1) & to(e1,x3) & n_fire(x3) & of(x3,x4) & n_car(x4) & Actor(e1,x2) & v_respond(e1) & (x1 = x2) & n_firefighter(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_fire(x2)) & n_car(x1))