What are the American football team which start with the letter vikings
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q17156793 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'vikings')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
american football team: Q17156793