What are the martial arts which start with the letter tangsudo
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q11417 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'tangsudo')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
martial arts: Q11417