A blond boy with a long purple Mohawk is playing the violin.
The boy is playing the drums.
Drums and violin are totally different instruments and cannot be played simultaneously.
exists e1 s1 s2 x1 x2 x3 x4.(n_violin(x4) & Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & with(x1,x2) & ne_nam_mohawk(x2) & of(x2,x3) & n_purple(x3) & a_long(s2) & Theme(s2,x2) & n_boy(x1) & a_blond(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_drum(x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))