A boy inside a shopping cart.
A kid is inside a shopping basket.
a cart and basket are used for the same things and a boy and kid are the same thing
exists x1 x2 x3.(a_topic(x1) & inside(x1,x2) & n_cart(x2) & of(x2,x3) & n_shopping(x3) & n_boy(x1))
exists p1 x1.(exists x2 x3.(inside(x1,x2) & n_basket(x2) & of(x2,x3) & n_shopping(x3)) & n_kid(x1))