A man in a black T-shirt playing the guitar.
A young man playing the guitar on state.
A man playing a guitar doesn't have to be young. Just because a man is playing a guitar doesn't mean he is playing the guitar on state.
exists e1 s1 x1 x2 x3 x4.(n_guitar(x4) & a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_t-shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3 x4.(n_guitar(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & on(x3,x4) & n_state(x4) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))