Every site, with its ancient name and its Pleiades identifier where the source has one. The gaps are the interesting part: roughly a third of the sites carry no Pleiades link and most carry no Latin name. Absence here is recorded as absence — no placeholder is invented — so this query doubles as a worklist for the concordance.
Also available as a plain file:
external-identifiers.rq.
The graph is fetched as a static file and queried in your browser with
rdflib under Pyodide — there is no endpoint, and nothing you type
leaves your machine.