Complex sentence: Osney Abbey or Oseney Abbey, later Osney Cathedral, was a house of Augustinian canons at Osney in Oxfordshire, on site now south of the Botley Road down Mill Street by Osney cemetery, next to the railway line just south of Oxford station.
Split into simpler sentences: Osney Abbey or Oseney Abbey, later Osney Cathedral, was a house of Augustinian canons at Osney in Oxfordshire. Theis south of the modern Botley Road, down Mill Street by Osney Cemetery, next to the railway line just south of Oxford station.