query: #title: All coats of arms from an entity located in France.
  #defaultView:ImageGrid
  # OPTIONAL { ?item wdt:P18 ?img. }
  SELECT DISTINCT * WHERE {
    ?item wdt:P94 ?COA;
      wdt:P17 wd:Q142.
    OPTIONAL { ?item wdt:P625 ?geo. }
  }
  ORDER BY (RAND())