query: #defaultView:Map
  SELECT ?library ?libraryLabel ?coordinate_location WHERE {
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    ?library wdt:P31 wd:Q7075.
    ?library wdt:P17 wd:Q668.
    OPTIONAL { ?library wdt:P625 ?coordinate_location. }
  }
  