entity_sources: ENT_NORR_NIFLHEIM, SRC_PROSE_EDDA, primary text attestation

2,936 links between entities and the sources that attest them, with evidence type and passage-level notes. The primary evidence layer: every entity classification traces to at least one record here.

This data as json

entity_id	source_id	evidence_type	source_note
ENT_NORR_NIFLHEIM	SRC_PROSE_EDDA	primary text attestation	attestation