query: #defaultView:Timeline
  #timeline of RADA students by year of graduation
  SELECT DISTINCT ?person ?personLabel ?personDescription (SAMPLE(?GraduationDate) AS ?date) (SAMPLE(?photo) AS ?pic) {
    ?person wdt:P31 wd:Q5 .
    ?person p:P69 ?statement .
    ?statement ps:P69 wd:Q523926 .
    ?statement pq:P582 ?GraduationDate .            
  
    OPTIONAL { ?person wdt:P18 ?photo . }
    
    SERVICE wikibase:label {
      bd:serviceParam wikibase:language "en" .
    }
  } GROUP BY ?person ?personLabel ?personDescription ORDER BY ?date