Tell me the franchise that fictional universe described in Avengers: Age of Ultron and which that starts with c
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:/instance of/ wd:/media franchise/ . ?sbj wdt:/fictional universe described in/ wd:/Avengers: Age of Ultron/ . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'c')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 