People sitting on sidewalk with many bags of things.
A brother and sister with many bags sit on the sidewalk.
'People' includes but is not limited to a brother and sister.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(e1,x4) & of(x4,x5) & n_thing(x5) & n_bag(x4) & n_quantity(x4) & on(e1,x3) & n_sidewalk(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3 x4 x5.(n_sidewalk(x5) & on(e1,x5) & Actor(e1,x1) & v_sit(e1) & with(x1,x4) & n_bag(x4) & n_quantity(x4) & n_sister(x3) & n_brother(x2) & subset_of(x3,x1) & subset_of(x2,x1))