query: sparql?query=SELECT DISTINCT ?contributor ?contributorLabel ?contributorDescription ?image ?commonscat ?wparticleNL WHERE { 
    BIND(wd:Q72752496 as ?album)
    ?album wdt:P767 ?contributor.
    ?contributor wdt:P18 ?image.
    OPTIONAL{?contributor wdt:P373 ?commonscat.}
    OPTIONAL{?wparticleNL schema:about ?contributor.
             ?wparticleNL schema:isPartOf <https://nl.wikipedia.org/>.}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "nl". }
  } 
  ORDER BY ?contributorLabel&format=json