entity_id,period_id,confidence,rationale,source_id,review_status
ENT_ISL_UMAR,PER_ISL_EARLY,high,"Umar ibn al-Khattab al-Faruq, the second Rightly-Guided Caliph (634-644 CE), under whom the early conquests greatly expanded, renowned for his austere justice.",SRC_SAHIH_BUKHARI,reviewed