An african american man is playing a red electric guitar.
A man is playing drums.
One cannot be playing a red electric guitar and playing drums at the same time.
exists e1 s1 s2 s3 s4 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_electric(s4) & Theme(s4,x2) & a_red(s3) & Theme(s3,x2) & n_man(x1) & a_american(s2) & Theme(s2,x1) & a_african(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_drum(x2) & n_man(x1))