query: #Paintings by "an author" in "a collection"
  #defaultView:ImageGrid
  SELECT DISTINCT ?item ?itemLabel ?itemDescription ?image ?collection ?collectionLabel ?Inv WHERE {
    ?item wdt:P31 wd:Q3305213.
    ?item wdt:P170 ?author.
    ?item (wdt:P195/wdt:P361*) ?collection.
    OPTIONAL { ?item wdt:P18 ?image. }
    OPTIONAL { ?item wdt:P217 ?Inv. }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE]". }
  # 
  # 
    FILTER(?collection = wd:Q5476145)    # select museum #
    FILTER(?author = wd:Q10857968)        # select author #
  }