People ride in a cart being pulled by a donkey.
The couple riding in the cart are thankful for the donkey pulling it.
People can be a couple. People can be thankful. People are not necessarily a couple. People are not necessarily thankful. A couple can be thankful. A couple is not necessarily thankful.
exists e1 e2 x1 x2 x3 x4.(in(e1,x2) & Actor(e2,x4) & n_donkey(x4) & Theme(e2,x3) & v_pull(e2) & (x2 = x3) & n_cart(x2) & Actor(e1,x1) & v_ride(e1) & n_people(x1))
exists e1 s1 x1 x2 x3 x4 x5.(n_thing(x1) & n_donkey(x4) & n_cart(x3) & n_riding(x1) & of(x1,x2) & n_couple(x2) & for(s1,x4) & Theme(e1,x1) & Actor(e1,x5) & v_pull(e1) & (x4 = x5) & Theme(s1,x1) & a_thankful(s1) & in(x1,x3))