Two men walking on a sidewalk, and two women walking in the opposite direction in the background.
The two men are talking on the sidewalk.
Walking on the sidewalk does not necessarily mean talking on the sidewalk.
exists e2 e1 s1 x1 x2 x3 x4 x5.(n_background(x5) & n_direction(x4) & a_opposite(s1) & Theme(s1,x4) & in(e2,x4) & in(x4,x5) & Actor(e2,x3) & v_walk(e2) & n_woman(x3) & card_eq_2(x3) & on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_sidewalk(x2) & n_man(x1) & card_eq_2(x1) & on(e1,x2) & Actor(e1,x1) & v_talk(e1))