query: select ?i ?iLabel ?nfLabel where {
    ?i wdt:P31 wd:Q11344;
    wdt:P138 ?nf
    # OPTIONAL { ?i skos:altLabel ?ais . FILTER (lang(?ais) = "ja")}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "ja" }
  }order by ?no