Complex sentence: An important cache of Old Kingdom administrative papyri, the Abusir Papyri, was discovered from Neferirkare's mortuary temple between 1893 and 1907 which date primarily to the reigns of Djedkare Isesi and Unas.
Split into simpler sentences: An important cache of Old Kingdom administrative papyri, the Abusir Papyri, was discovered in Neferirkare's mortuary temple between 1893 and 1907. This cache dates primarily from the reigns of Djedkare Isesi and Unas.