AnalyzerSentence analysis3SpansSentence元号の変更1000 character limitAnalyzeSentence元げん号ごうの変へん更こうSpan Details元げん号ごうJapanese era name; imperial era namenounのpossession, attribution, nominalizer, or nominal linkergrammar変へん更こうchange; modification; alteration; revision; amendmentnoun, suru verb