Two girls and two boys are walking down a road with backpacks on their backs.
Four kids are walking together.
Two girls and two boys are four kids.
exists e1 x1 x2 x3 x4 x5 x6.(on(e1,x6) & n_back(x6) & of(x6,x2) & n_thing(x2) & with(e1,x5) & n_backpack(x5) & down(e1,x4) & n_road(x4) & Actor(e1,x1) & v_walk(e1) & subset_of(x3,x1) & n_boy(x3) & card_eq_2(x3) & subset_of(x2,x1) & n_girl(x2) & card_eq_2(x2))
exists e1 s1 x1.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_kid(x1) & card_eq_4(x1))