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Sentence analysis
5Spans
Sentence
Span Details
この上なく
the most; the best; supreme; unrivalled-> この上ないexpression, i-adjective
重要
important; essential; significantna-adjective
な
adnominal form of the copula after a na-adjectivegrammar
問題
question; problem (on a test); problem; issue; matter; doubt; public discussion; controversy; trouble; difficulty; inconveniencenoun
だ。
plain copulagrammar