Three children playing on a floor with toys.
Three siblings are playing with toys.
The children aren't necessarily siblings.
exists e1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_toy(x4) & on(e1,x3) & n_floor(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & card_eq_3(x1))
exists e1 x1 x2.(with(e1,x2) & n_toy(x2) & Actor(e1,x1) & v_play(e1) & n_sibling(x1) & card_eq_3(x1))