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Sentence analysis
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Sentence
Span Details
デート
date with someone; outing for two; date night; calendar date; day or datenoun, suru verb
の
possession, attribution, nominalizer, or nominal linkergrammar
約束
promise; agreement; one's word; contract; appointment; engagement; date; convention; rule; destiny; fatenoun, suru verb
が
subject markergrammar
おじゃんになった。
fall through; come to nothing; be ruined-> おじゃんになるexpression, verb