Complex sentence: Recessed and chest tombs in both transepts and in the south aisle of the choir contain effigies of bishops and knights while large flat slabs in the now grass covered floor of the cathedral mark the positions of graves.
Split into simpler sentences: Recessed and chest tombs in both transepts and in the south aisle of the choir contain effigies of bishops and knights. Large flat slabs in the now grass covered floor of the cathedral also mark the positions of graves.