entity_id,period_id,confidence,rationale,source_id,review_status ENT_SYR_APHRAHAT,PER_SYRIAC,high,"Early-4th-c. Persian author of the 23 Demonstrations, earliest major Syriac theologian, writing under Sasanian rule. Attested by his Demonstrations and Baum-Winkler.",SRC_BAUM_WINKLER_COTE,reviewed