Two guitarists dressed in white perform.
Two people in white are in front of 500 people.
There may not be as many as 500 people there.
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_perform(x3) & a_white(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_guitarist(x1) & card_eq_2(x1))
exists p1 x1 x2.(exists x3 x4.(in(x1,x3) & of(x3,x4) & n_people(x4) & card_eq_500(x4) & n_front(x3)) & in(x1,x2) & n_white(x2) & n_people(x1) & card_eq_2(x1))