query: # 100 Art Gallery of South Australia works 
  
  SELECT ?artwork  ?creatorLabel ?collectionLabel WHERE {
    ?artwork wdt:P6805 ?agsa.
    ?artwork wdt:P31 wd:Q838948.  # work of art
    OPTIONAL {?artwork wdt:P170 ?creator.}
    OPTIONAL {?artwork wdt:P195 ?collection.}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  }
  LIMIT 100