A man is sitting between two other men on a subway while reading a magazine.
A man is sitting between two women on a bus.
The man can not be sitting between two women on a bus and two other men on a subway at the same time.
exists e2 e1 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_read(e2) & n_magazine(x4) & on(e1,x3) & n_subway(x3) & between(e1,x2) & -(x2 = x1) & n_man(x1) & n_man(x1) & n_man(x2) & card_eq_2(x2) & Actor(e1,x1) & v_sit(e1))
exists e1 x1 x2 x3.(on(e1,x3) & n_bus(x3) & between(e1,x2) & n_woman(x2) & card_eq_2(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))