Question: What are the mass media which start with the letter youtube
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q11033 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'youtube')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25