<prompt> Structures passing through the greater sciatic foramen are all of the following except -PyriformisSuperior gluteal nerveInferior gluteal nerveObturator nerve  <response>: Structures passing through greater sciatic foramen.PiriformisAbove Piriformis Superior gluteal nerve and vesselsBelow Piriformis Inferior gluteal nerve and vessels Sciatic nerve Posterior cutaneous nerve of thigh Nerve to quadratus femoris Pudendal nerve Internal pudendal vessels Nerve to obturator internus 