A black man with dreadlocks playing the saxaphone.
A white man is playing acoustic guitar.
The man is black, not white. The man is playing a saxophone, not a guitar.
exists e1 s1 x1 x2 x3 x4.(n_saxaphone(x4) & a_topic(x1) & with(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_dreadlock(x2) & n_man(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_acoustic(s2) & Theme(s2,x2) & n_man(x1) & a_white(s1) & Theme(s1,x1))