Two guitarists dressed in white perform.
Two people in black sing parodies in front a bunch of dogs.
The guitarists are wearing white, so they cannot sing while wearing black.
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 s1 s2 x1 x2.(all x3.(n_bunch(x3) -> exists x4 x5.(a_topic(x1) & in(x1,x2) & in(x2,x4) & of(x4,x5) & n_dog(x5) & for(x4,x3) & n_front(x4))) & n_parody(x2) & a_sing(s2) & Theme(s2,x2) & a_black(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))