An old man dressed in black with white stockings is holding a bagpipe.
The man knows how to play the instrument.
Just because the man is holding a bagpipe does not mean that he knows how to play the instrument.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_hold(e2) & n_bagpipe(x5) & with(e1,x4) & n_stocking(x4) & a_white(s3) & Theme(s3,x4) & Theme(e1,s2) & Theme(s2,x3) & a_black(s2) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 x1 x2 x4.(n_instrument(x4) & n_man(x1) & Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2)))