People are walking through a mall.
They are shopping.
PEOPLE ARE SHOPPING
exists e1 x1 x2.(through(e1,x2) & n_mall(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
exists p1 x1.(n_thing(x1) & exists x2.((x1 = x2) & n_shopping(x2)))