Which is the musical form which contains the word variation in it's name?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q862597 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'variation')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
musical form: Q862597