entity_id,period_id,confidence,rationale,source_id,review_status ENT_ISL_UTHMAN,PER_ISL_EARLY,high,"Uthman ibn Affan, the third Rightly-Guided Caliph (644-656 CE), credited with commissioning the standardized written compilation of the Quran, and a son-in-law of the Prophet.",SRC_SAHIH_BUKHARI,reviewed