Two young blond children play in a construction site area.
The construction site has only workers wearing hard hats.
The young children can not ply because the construction works wearing  hard hats.
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x2) & n_area(x2) & of(x2,x4) & n_site(x4) & of(x2,x3) & n_construction(x3) & Actor(e1,x1) & v_play(e1) & n_child(x1) & a_blond(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 e2 s1 x1 x2 x3 x4.(n_site(x1) & of(x1,x2) & n_construction(x2) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_hat(x4) & a_hard(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & all x5.(n_worker(x5) -> (x3 = x5)) & n_worker(x3))