query: #Main subjects given as articles
  SELECT ?item ?itemLabel ?subjectLabel
    WHERE {?item wdt:P921 ?subject.
           ?subject wdt:P31 wd:Q13442814;
                    wdt:P1476 ?title.
           FILTER(STRLEN(?title) < 15)
  
        SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
           }
  LIMIT 50