A man in a white shirt is playing tennis.
A tennis player.
man playing tennis means a tennis player.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_tennis(x3) & in(x1,x2) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists s1 x1 x2.(a_topic(x1) & n_player(x1) & a_.(s1) & Theme(s1,x1) & of(x1,x2) & n_tennis(x2))