A little boy and a little girl are playing with pebbles on the beach.
There are children at the beach.
A little boy and a little girl are children.
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_beach(x5) & on(e1,x5) & with(e1,x4) & n_pebble(x4) & Actor(e1,x1) & v_play(e1) & subset_of(x3,x1) & n_girl(x3) & a_little(s2) & Theme(s2,x3) & subset_of(x2,x1) & n_boy(x2) & a_little(s1) & Theme(s1,x2))
exists p1 x1 x3.(n_beach(x3) & exists x2.((x1 = x2) & at(x2,x3) & n_child(x2)))