What is the mantra created by Vishvamitra that contains the word "Gayatri" in its title?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q131510 . ?sbj wdt:P170 wd:Q2773345 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'gayatri')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
mantra: Q131510 vishvamitra: Q2773345