A child skis across the snowy ground.
A woman sitting on a bench.
A child and a woman are two different people.
exists e1 s1 x1 x2.(n_ground(x2) & a_snowy(s1) & Theme(s1,x2) & across(e1,x2) & Actor(e1,x1) & v_ski(e1) & n_child(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_bench(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_woman(x1))