There are two children at home, playing.
The children are under the age of 18 years old.
The two children that are at home playing are under the age of 18.
exists e1 p1 x1 x2.(for(p1,e1) & Actor(e1,x1) & v_play(e1) & at(p1,x2) & n_home(x2) & exists x3.((x1 = x3) & n_child(x3) & card_eq_2(x3)))
exists e1 p1 x1 x2 x3 x4.(n_age(x4) & n_child(x2) & Theme(e1,x2) & Pivot(e1,x1) & r_more(e1) & v_old(e1) & exists x5.(under(x3,x4) & of(x4,x5) & n_year(x5) & n_date(x5) & a_date_day_18(x5) & a_date_day_18(x5)) & (x2 = x3) & n_thing(x1))