Pedestrians are yielding to a firetruck as it enters the intersection.
Cars are on the street.
firetruck are not cars.
exists e1 p1 x1 x2 x3.(n_intersection(x3) & ne_nam_pedestrians(x1) & exists e2.(Theme(e2,x3) & Actor(e2,x2) & v_enter(e2)) & n_thing(x2) & as(e1,p1) & to(e1,x2) & n_firetruck(x2) & Actor(e1,x1) & v_yield(e1))
exists p1 x1 x2.(n_street(x2) & on(x1,x2) & n_car(x1))