Question: What was the determining method for Magellan and the Chilean Antarctic Region's population?
Paraphrase: Which method was used in determining the population for Magellan and the Chilean Antartic Region?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q2189 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '166533')) . ?s pq:P459 ?value}