Give me the name of the mass media that starts with 'y' and has a 3GPP readable file format.
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:/instance of/ wd:/mass media/ . ?sbj wdt:/readable file format/ wd:/3GPP file format/ . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'y')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 