entity_id,period_id,confidence,rationale,source_id,review_status
ENT_NORF_NOKK,PER_NOR_VIKING,high,"The shape-shifting freshwater spirit (Norwegian nokk/nokken, Swedish nacken, Danish nokke) of rivers, lakes and waterfalls, often a fiddle-playing male who lures victims to drown; cognate with the Germanic nixe/Nix. Post-medieval Scandinavian folk tradition; documented by Simek.",SRC_SIMEK_NORTHERN,reviewed