Four children in the pool.
Four small childrens are swimming in the pool
Swimming can be done in pool.
exists x1 x2.(n_pool(x2) & a_topic(x1) & in(x1,x2) & n_child(x1) & card_eq_4(x1))
exists e1 s1 x1 x2.(n_pool(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_children(x1) & a_small(s1) & Theme(s1,x1) & card_eq_4(x1))