query: embed.html#SELECT DISTINCT ?year ?x ?xLabel ?place ?placeLabel ?pub ?pubLabel ?url ?coord 
  WHERE {
    { ?x wdt:P361 wd:Q2603503. }
    UNION
    { ?x wdt:P361 wd:Q16964319. }
     ?x wdt:P577 ?date .   
    
    optional {?x wdt:P291 ?place . 
    ?place wdt:P625 ?coord. }
    
    OPTIONAL { ?x wdt:P123 ?pub. }
    
    ?x p:P361 ?part_of.
    ?part_of pq:P2699 ?url.
    
    BIND (YEAR(?date) AS ?year)
    
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  }
  GROUP BY ?year ?x ?xLabel ?place ?placeLabel ?pub ?pubLabel ?url ?coord
  ORDER BY ?placeLabel