A man in a purple shirt in front of a woman in a yellow shirt.
A couple of players in a basketball game, guarding each other.
the man and woman are not necessarily a couple of players in a basketball game, and they are not necessarily guarding each other.
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & in(x2,x3) & of(x3,x4) & in(x4,x5) & n_shirt(x5) & a_yellow(s2) & Theme(s2,x5) & n_woman(x4) & n_front(x3) & n_shirt(x2) & a_purple(s1) & Theme(s1,x2) & n_man(x1))
exists x1 x2 x3 x4 x5.(a_topic(x1) & all x6.(n_other(x6) -> exists e1.(Theme(e1,x6) & Actor(e1,x5) & v_guard(e1))) & (x1 = x5) & in(x1,x3) & n_game(x3) & of(x3,x4) & n_basketball(x4) & of(x1,x2) & n_player(x2) & n_couple(x1))