Question: What period of India's history starts with the letter N.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q17524420 . ?sbj wdt:P1269 wd:Q668 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'h')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25