A mother and three children collecting garbage from a blue and white garbage can on the street.
The four people looking through the garbage need it to fuel their DeLoreon to get back to the future.
If one is collecting garbage they are in possession of garbage. If one is looking through garbage they dont necessarily have any.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_street(x7) & on(e2,x7) & Actor(e2,x1) & v_can(e2) & from(e1,x6) & n_garbage(x6) & a_white(s2) & Theme(s2,x6) & a_blue(s1) & Theme(s1,x6) & Theme(e1,x5) & Actor(e1,x4) & v_collect(e1) & n_garbage(x5) & (x1 = x4) & subset_of(x3,x1) & n_child(x3) & card_eq_3(x3) & subset_of(x2,x1) & n_mother(x2))
exists e2 e1 p1 x1 x2 x3 x4 x5.(n_future(x5) & n_deloreon(x4) & of(x4,x3) & n_thing(x3) & n_thing(x3) & n_garbage(x3) & n_people(x1) & card_eq_4(x1) & Topic(e2,p1) & Recipient(e2,x3) & Actor(e2,x1) & v_need(e2) & exists e3 p2.(Topic(e3,p2) & exists e4 p3.(exists s1.(to(s1,x5) & Theme(s1,x3) & a_back(s1)) & Topic(e4,p3) & Actor(e4,x3) & v_get(e4)) & Theme(e3,x4) & Actor(e3,x3) & v_fuel(e3)) & through(e1,x3) & Actor(e1,x2) & v_look(e1) & (x1 = x2))