A man in a green shirt with long beard plays a stringed instrument.
A man is playing a stringed instrument for his friends
Just because a man plays a stringed instrument doesn't mean it is for his friends.
exists e1 s1 s2 s3 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & n_instrument(x4) & a_stringed(s3) & Theme(s3,x4) & in(x1,x2) & with(x2,x3) & n_beard(x3) & a_long(s2) & Theme(s2,x3) & n_shirt(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 e2 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_play(e2) & for(x2,x3) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_instrument(x2) & Theme(e1,x2) & v_stringe(e1) & n_man(x1))