People sitting next to trees on a bench.
Kids are rollerskating down the sidewalk.
They're either sitting or rollerskating
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_bench(x4) & to(e1,x3) & n_tree(x3) & r_next(e1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_sidewalk(x2) & down(e1,x2) & Actor(e1,x1) & v_rollerskate(e1) & n_kid(x1))