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Sentence analysis
6Spans
Sentence
Span Details
確か
sure; certain; definite; reliable; trustworthy; accurate; if I remember correctly; if I'm not mistakenna-adjective, adverb
な
adnominal form of the copula after a na-adjectivegrammar
証拠
evidence; proofnoun
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar