A man playing his guitar on a beautiful Sunday morning.
A man play with his guitar.
Playing his guitar and play with his guitar imply the same thing.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & on(x3,x4) & n_morning(x4) & (x4 = x5) & ne_tim_sunday(x5) & a_beautiful(s1) & Theme(s1,x4) & n_guitar(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & with(x1,x3) & n_guitar(x3) & of(x3,x1) & n_male(x1) & n_play(x1) & of(x1,x2) & n_man(x2))