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Sentence analysis
9Spans
Sentence
Span Details
酸化窒素
nitrogen oxidenoun
は
topic markergrammar
大気汚染
air pollutionnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
原因
cause; origin; sourcenoun, suru verb
物質
material; substance; matternoun
の
possession, attribution, nominalizer, or nominal linkergrammar
一つ
one; for one thing; only; just; (not) even one; just (try it); a little; some kind of; one type ofnumeric, noun, adverb, no-adjective
だ。
plain copulagrammar