A man and woman wearing sunglasses are window shopping.
A man and woman are looking at something they want to buy.
Standing next to glass display on the sidewalk in an urban setting does not imply they looking at something they want to buy.
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 e1 e2 p1 x1 x2 x3 x4.(at(e1,x4) & Topic(e2,p1) & Actor(e2,x2) & v_want(e2) & exists e3 x5.(Theme(e3,x5) & Actor(e3,x2) & v_buy(e3) & (x4 = x5)) & n_thing(x2) & n_thing(x4) & Actor(e1,x1) & v_look(e1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))