Two men sit at a table on a sidewalk near a street sign.
The men a walking along the sidewalk.
They can't sit if they're walking.
exists e1 x1 x2 x3 x4 x5.(at(e1,x2) & on(x2,x3) & near(x3,x4) & n_sign(x4) & of(x4,x5) & n_street(x5) & n_sidewalk(x3) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists x2 x3.(n_sidewalk(x3) & n_man(x2) & all x1.(n_walking(x1) -> (a_topic(x2) & along(x2,x3) & for(x2,x1))))