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Sentence analysis
6Spans
Sentence
Span Details
秘密保持
confidentiality; nondisclosurenoun
の
possession, attribution, nominalizer, or nominal linkergrammar
誓約書
written oath; pledge; covenantnoun
に
direction, time, indirect object, or target markergrammar
サイン
autograph; signature; sign; signal; indicationnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar