Pit crew working on a race car.
Nascar Sprint Cup pit crew challenging others
This could be any type of pit crew, we don't know that it's a Nascar Sprint Cup pit crew.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_car(x4) & of(x4,x5) & n_race(x5) & Actor(e1,x3) & v_work(e1) & (x1 = x3) & n_crew(x1) & (x1 = x2) & ne_nam_pit(x2))
exists e1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & Theme(e1,x7) & Actor(e1,x6) & v_challenge(e1) & -(x7 = x2) & n_person(x2) & n_person(x7) & (x1 = x6) & n_crew(x1) & of(x1,x5) & n_pit(x5) & (x1 = x4) & ne_org_cup(x4) & (x1 = x3) & ne_org_sprint(x3) & (x1 = x2) & ne_org_nascar(x2))