query: #defaultView:Map
  SELECT ?item ?itemLabel ?continentLabel ?countryLabel ?coords WHERE {
    ?item wdt:P31 wd:Q752003 .
    OPTIONAL { ?item wdt:P30 ?continent }
    OPTIONAL { ?item wdt:P17 ?country }
    ?item wdt:P625 ?coords .
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . }
  } ORDER BY ?itemLabel