query: #All items with a property
  # Sample to query all values of a property
  # Property talk pages on Wikidata include basic queries adapted to each property
  SELECT
    ?item ?itemLabel
    ?value ?valueLabel
  # valueLabel is only useful for properties with item-datatype
  WHERE 
  {
    ?item wdt:P5470 ?value
    # change P1800 to another property        
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }
  # remove or change limit for more results
  