Question: Name an isotope of neutronium that starts with letter N
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q12525553 . ?sbj wdt:P517 wd:Q11418 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'n')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25