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Sentence analysis
8Spans
Sentence
Span Details
任意捜査
voluntary investigation; consensual searchnoun
では、
contrastive で + は; then; well thengrammar
被疑者
suspectnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
協力
cooperation; collaboration; help; supportnoun, suru verb
が
subject markergrammar
不可欠
indispensable; essential; vitalna-adjective, noun
だ。
plain copulagrammar