They don't ask for palanquins and howdahs.

The first sentence means that all escortings by officers in Saint Petersburg were escortings of ballerinas. The second sentence means that all escortings of ballerinas in Saint Petersburg were escortings by officers.

The occupants of Railton Road were bell-jeaned, dome-Afroed, Doc Martened and muscle-teed: as bad and black as they could possibly muster themselves to be […]

So, in any overall account of the social sciences, disputes are liable to break out about what is, or is not, truly scientific research; and, too often, these disputes generate more heat than light.