Three children are sitting in the grass surrounded by their parents.
Mothers and fathers chat while their kids toss around a ball.
It's not indicated before whether the mothers and fathers have a chat while they're sitting. Plus, the kids don't toss around a ball before.
exists e1 e2 x1 x2 x3 x4.(n_parent(x4) & of(x4,x2) & n_thing(x2) & n_grass(x2) & in(e1,x2) & Actor(e2,x4) & Theme(e2,x3) & v_surround(e2) & (x2 = x3) & Actor(e1,x1) & v_sit(e1) & n_child(x1) & card_eq_3(x1))
exists e1 e2 x1 x2 x3 x4 x5 x6.(around(e2,x6) & n_ball(x6) & Actor(e2,x1) & v_toss(e2) & subset_of(x3,x1) & while(e1,x5) & n_kid(x5) & of(x5,x2) & n_thing(x2) & Actor(e1,x4) & v_chat(e1) & (x3 = x4) & n_father(x3) & subset_of(x2,x1) & n_mother(x2))