What faction in corporation

Good afternoon. Can someone help me with a question:
I have a list of NPC sourcing on request:
I can find out the name of each corporation, etc. on request:
https://esi.evetech.net/latest/corporations/ corporationID/?datasource=tranquility,
How can I find out which FACTION it belongs to?

You can look up in game or on dotlan the faction and all the corps that fall under it

interesting use ESI

This is missing from ESI, but is available in the SDE (https://developers.eveonline.com/resource).

For example, Caldari Navy (corporation 1000035) has a factionId value of 500001 (Caldari State):

  "factionID": 500001,
  "nameID": {
    "en": "Caldari Navy",
  "raceID": 1,