SELECT DISTINCT ?city ?cityLabel ?countryLabel  (SAMPLE(?location) AS ?location) (MAX(?population) AS ?population)
WHERE
{
  ?city wdt:P31/wdt:P279* wd:Q515;
        wdt:P625  ?location;
        wdt:P1082 ?population;
        wdt:P17   ?country.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
GROUP BY ?city ?cityLabel ?countryLabel
LIMIT 100