A child is pushing a tire.
A child pushes a wagon down the street.
A child is pushing a tire and a wagon.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_tire(x2) & n_child(x1))
exists e1 x1 x2 x3.(n_street(x3) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & down(x2,x3) & n_wagon(x2) & n_child(x1))