query: #Overview of entities (Qnumbers) related of this project, what they are, and which album they are related to 
  SELECT DISTINCT ?item ?itemLabel 
  #?itemIsA 
  (GROUP_CONCAT(DISTINCT ?itemIsALabel ; separator = " --- ") as ?ThisItemIsA) 
  ?relatedToAlbum ?relatedToAlbumLabel
  WHERE 
  {
    ?item (p:P5008/ps:P5008) wd:Q99484628; .
    OPTIONAL {?item p:P31 [ps:P31 ?itemIsA].}
    OPTIONAL {?item p:P18 [ps:P18 ?image].}
    OPTIONAL {?item p:P5008 [pq:P518 ?relatedToAlbum].}
  
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
    ?item rdfs:label ?itemLabel.
    ?itemIsA rdfs:label ?itemIsALabel.
    ?relatedToAlbum rdfs:label ?relatedToAlbumLabel.
    }
  }
  GROUP BY ?item ?itemLabel ?relatedToAlbum ?relatedToAlbumLabel
  ORDER BY ?relatedToAlbum