A mother and three children collecting garbage from a blue and white garbage can on the street.
A family is looking for the next meal in a trash can.
A mother and three children aren't necessarily family.   A mother and three children collecting garbage aren't necessarily looking for the next meal.
exists e2 e1 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 s1 x1 x2 x3 x4.(n_meal(x2) & a_next(s1) & Theme(s1,x2) & for(e1,x2) & in(x2,x3) & Actor(e2,x4) & v_can(e2) & (x3 = x4) & n_trash(x3) & Actor(e1,x1) & v_look(e1) & n_family(x1))