A man and woman wearing sunglasses are window shopping.
A couple window shops on a sunny day.
Wearing sunglasses does not necessarily imply it is a sunny day.
exists e1 p1 x1 x2 x3 x4 x5.(exists x6 x7.((x1 = x6) & n_shopping(x6) & of(x6,x7) & n_window(x7)) & Theme(e1,x5) & Actor(e1,x4) & v_wear(e1) & n_sunglass(x5) & (x1 = x4) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x4) & n_day(x4) & a_sunny(s1) & Theme(s1,x4) & n_shop(x1) & of(x1,x3) & n_window(x3) & of(x1,x2) & n_couple(x2))