There are two children, one with a broom the other with a dustpan that are cleaning up the concrete in front of a green trashcan.
School kids are helping to clean trash to combat littering.
Not all kids are school kids and not all trash cleaning is done to combat littering.
exists p1 x1 x8.(n_concrete(x8) & exists e1 s1 s2 x2 x3 x4 x5 x6 x7 x9 x10.((x1 = x2) & rel(x2,x3) & with(x3,x4) & with(x4,x6) & a_up(s2) & Manner(e1,s2) & Theme(e1,x8) & Actor(e1,x7) & v_clean(e1) & in(x8,x9) & of(x9,x10) & n_trashcan(x10) & a_green(s1) & Theme(s1,x10) & n_front(x9) & (x6 = x7) & n_dustpan(x6) & n_other(x5) & (x4 = x5) & n_broom(x4) & n_thing(x3) & card_eq_1(x3) & n_child(x2) & card_eq_2(x2)))
exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_help(e1) & exists e2 p2 x3.(Topic(e2,p2) & Recipient(e2,x3) & Actor(e2,x1) & v_clean(e2) & exists e3 x4.(Theme(e3,x4) & Actor(e3,x3) & v_combat(e3) & n_littering(x4)) & n_trash(x3)) & n_kid(x1) & (x1 = x2) & ne_nam_school(x2))