Which is the kingdom that had Christianity as official religion and starts with the letter k?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q417175 . ?sbj wdt:P3075 wd:Q5043 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'k')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
kingdom: Q417175 christianity: Q5043