entity_id,period_id,confidence,rationale,source_id,review_status
ENT_CHARON,PER_GRK_ARCHAIC,high,Ferryman of the dead; Archaic; Polygnotus painting (Classical); Aristophanes Frogs,SRC_APOLLODORUS_LIBRARY,reviewed
ENT_CHARON,PER_GRK_CLASSICAL,high,Aristophanes Frogs (405 BCE); Polygnotus Nekyia painting; Classical literary elaboration,SRC_BURKERT_GREEK_RELIGION,reviewed