A shirtless man in white shorts is holding a wire.
a pianist playing
A shirtless man holding a wire is not a pianist playing.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_wire(x3) & in(x1,x2) & n_shorts(x2) & a_white(s2) & Theme(s2,x2) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & n_playing(x1) & of(x1,x2) & n_pianist(x2))