The brass section of an orchestra, mostly school-aged, performs a piece.
The brass section in an orchestra peform some music.
The brass section of an orchestra, performs a piece of music.
exists e1 s1 x1 x2 x3 x4 x5.(n_section(x1) & of(x1,x2) & n_brass(x2) & Theme(e1,x5) & Actor(e1,x1) & v_perform(e1) & n_piece(x5) & r_mostly(s1) & Theme(s1,x4) & a_school-aged(s1) & (x1 = x4) & of(x1,x3) & n_orchestra(x3))
exists x1 x2 x3 x4 x5.(n_section(x1) & of(x1,x2) & n_brass(x2) & a_topic(x1) & in(x1,x3) & n_music(x3) & of(x3,x5) & n_peform(x5) & of(x3,x4) & n_orchestra(x4))