A man is playing a guitar and is sweaty.
A man playing the drums.
Guitars and drums are different instruments.
exists e1 p1 x1 x2 x3.(exists x4.((x3 = x4) & n_sweaty(x4)) & n_man(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_drum(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_man(x1))