Two pairs of legs walk past the end of an alley between two brick buildings.
Something is walking outside.
Something, being implied, that has two pairs of legs, is walking outside.
exists e1 x1 x2 x3 x4 x5 x6.(n_end(x3) & past(e1,x3) & of(x3,x4) & between(x4,x5) & n_building(x5) & of(x5,x6) & n_brick(x6) & card_eq_2(x5) & n_alley(x4) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_leg(x2) & n_pair(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_thing(x1))