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Sentence analysis
7Spans
Sentence
Span Details
実験
experiment; experimentationnoun, suru verb
では、
contrastive で + は; then; well thengrammar
注意深い
attentive; cautious; careful; watchfuli-adjective
観察
observation; watching; surveynoun, suru verb
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar