A group of youths march down the street waving flags showing the color spectrum.
The youth are outside.
Yours marching down the street are youths outside.
exists e2 e3 e1 x1 x2 x3 x4 x5 x6 x7 x8.(n_spectrum(x7) & of(x7,x8) & n_color(x8) & n_street(x3) & down(e1,x3) & Theme(e3,x5) & Actor(e3,x4) & v_wave(e3) & Theme(e2,x7) & Actor(e2,x6) & v_show(e2) & (x5 = x6) & n_flag(x5) & (x3 = x4) & Actor(e1,x1) & v_march(e1) & of(x1,x2) & n_youth(x2) & n_group(x1))
exists s1 x1.(n_youth(x1) & Theme(s1,x1) & a_outside(s1))