old man pushing a cart in street.
The old man bought a lot of groceries.
Just because an old man is pushing a cart doesn't imply he bought groceries.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_street(x4) & Theme(e1,x3) & Actor(e1,x2) & v_push(e1) & n_cart(x3) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_man(x1) & a_old(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_buy(e1) & of(x2,x3) & n_grocery(x3) & n_lot(x2))