People riding a tour bus seeing the big skyscrapers.
People riding a bus seeing the buildings.
The people riding the bus are seeing the big skyscrapers, which are the buildings
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_skyscraper(x5) & a_big(s1) & Theme(s1,x5) & Theme(e2,x5) & Actor(e2,x1) & v_see(e2) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bus(x3) & of(x3,x4) & n_tour(x4) & (x1 = x2) & n_people(x1))
exists e1 e2 x1 x2 x3 x4.(n_building(x4) & Theme(e2,x4) & Actor(e2,x1) & v_see(e2) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bus(x3) & (x1 = x2) & n_people(x1))