Two skateboarders walking down a sidewalk in front of many parking signs.
Two skateboarders are outside walking
A sidewalk is outside.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(e1,x4) & of(x4,x5) & n_sign(x5) & of(x5,x6) & n_parking(x6) & n_quantity(x5) & n_front(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_sidewalk(x3) & (x1 = x2) & n_skateboarder(x1) & card_eq_2(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_walking(x2) & a_outside(s1) & Theme(s1,x2)) & n_skateboarder(x1) & card_eq_2(x1))