People are in a grocery store.
People buy a weeks worth of groceries at the store.
Not all people in a grocery store buy a weeks worth of groceries.
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_store(x2) & of(x2,x3) & n_grocery(x3)) & n_people(x1))
exists e1 x1 x2 x3 x4 x5.(n_store(x5) & at(e1,x5) & Theme(e1,x2) & Actor(e1,x1) & v_buy(e1) & of(x2,x4) & n_grocery(x4) & Time(x2,x3) & n_worth(x3) & n_week(x2) & n_people(x1))