corpus_wikidata.jsonl and wikidata_fields.jsonl are derived from Wikidata
(https://www.wikidata.org), read through the Wikidata Query Service and
the wbgetentities API, and carry Wikidata's license.

Wikidata states that "All structured data (i.e. the main, Property,
Lexeme, and EntitySchema namespaces) is released into the public
domain".
https://www.wikidata.org/wiki/Wikidata:Licensing

CC0 1.0 Universal: https://creativecommons.org/publicdomain/zero/1.0/

No attribution is required; this file credits the source anyway.
Source: Wikidata, Wikimedia Foundation. Each line of
wikidata_fields.jsonl names its item's QID, resolvable at
https://www.wikidata.org/wiki/<QID>. Only public figures are sampled
(deceased, or with at least 10 sitelinks), and only name strings and
QIDs are kept.
