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Sentence analysis
6Spans
Sentence
Span Details
徹底
thoroughness; completeness; consistency; thorough enforcement; ensuring compliancenoun, suru verb
した
light/support verb with a noun or noun-like phrase-> するgrammar
調査
investigation; examination; inquiry; surveynoun, suru verb
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar