Two children run towards the lagoon.
The children are outside.
Lagoons are always outside.
exists e1 x1 x2.(n_lagoon(x2) & towards(e1,x2) & Actor(e1,x1) & v_run(e1) & n_child(x1) & card_eq_2(x1))
exists s1 x1.(n_child(x1) & Theme(s1,x1) & a_outside(s1))