Emergency medical crews, firefighters, and police officers at the scene of a car accident.
There is a several car pile up on the interstate
We don't know that there are several car pile up.
exists s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_scene(x7) & a_topic(x1) & rel(x1,x3) & subset_of(x5,x3) & at(x5,x7) & of(x7,x8) & n_accident(x8) & of(x8,x9) & n_car(x9) & n_officer(x5) & of(x5,x6) & n_police(x6) & subset_of(x4,x3) & n_firefighter(x4) & n_crew(x1) & a_medical(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_emergency(x2))
exists e1 p1 s1 x1 x2 x3.(n_interstate(x3) & a_up(s1) & Manner(e1,s1) & on(e1,x3) & Actor(e1,x1) & v_pile(e1) & exists s2 x4.((x2 = x4) & n_car(x4) & a_several(s2) & Theme(s2,x4)) & (x1 = x2))