Blond white girl with dreads rocks out on bass guitar.
The girl is playing the drums
The girl can either be playing the bass guitar or the drums.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(r_out(e1) & r_.(e1) & on(e1,x6) & n_guitar(x6) & of(x6,x7) & n_bass(x7) & Theme(e1,x2) & Actor(e1,x1) & v_event(e1) & with(x2,x4) & n_rock(x4) & of(x4,x5) & n_dread(x5) & n_girl(x2) & a_white(s1) & Theme(s1,x2) & (x2 = x3) & ne_nam_blond(x3) & n_thing(x1))
exists e1 x1 x2.(n_drum(x2) & n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))