CEMLA — Centro de Estudios Migratorios Latinoamericanos

Buenos Aires port arrival books, 1882–1960, indexed by passenger name. Worked by the Blažević archive across four spellings of the same surname — which is how it has to be worked, because the clerk wrote what he heard. Not yet surveyed. NO SEAT RECORDED, DELIBERATELY. This is the one row the source-layer audit's `at` finding genuinely applies to — every other row it named is a COUNTRYWIDE kind, which sourcesNear() exempts from distance sorting, so a missing seat costs them nothing. CEMLA is filed as an index and is sorted by distance, and it does sink. Its Wikidata item (Q140429797) states a country, a founding year and a website and NO coordinates, so there is nothing to write: the institute is in Buenos Aires by its own description, which is prose and not a claim, and a coordinate inferred from prose is the guess this project refuses.