What are  the archipelago  which start with the letter I
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q33837 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'î')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
archipelago: Q33837