What are the type of spor which start with the letter waterskiing
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q31629 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'waterskiing')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
type of sport: Q31629