query: #memorable trees without code
  SELECT DISTINCT ?item ?itemLabel ?sitelink
  WHERE
  {
  	?item wdt:P31 wd:Q811534 .
  	OPTIONAL { ?item wdt:P677 ?itemDescription  }
  	FILTER (!BOUND(?itemDescription))
      OPTIONAL { ?sitelink schema:about ?item . ?sitelink schema:inLanguage "cs" } 
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "cs"}
  }