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Sentence analysis
7Spans
Sentence
Span Details
開戦
outbreak of war; start of hostilitiesnoun, suru verb
以往
after; and later; before; prior tonoun, noun suffix
の
possession, attribution, nominalizer, or nominal linkergrammar
外交文書
diplomatic documents; diplomatic papersnoun
を
object markergrammar
調査
investigation; examination; inquiry; surveynoun, suru verb
する。
light/support verb with a noun or noun-like phrasegrammar