Two men walking on a sidewalk, and two women walking in the opposite direction in the background.
The men and women are sitting inside.
One can not be walking and sitting at the same time.
exists e1 e2 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 s1 x1 x2 x3.(n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_inside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))