Analyzer
Sentence analysis
6Spans
Sentence
Span Details
汚染
pollution; contaminationnoun, suru verb
の
possession, attribution, nominalizer, or nominal linkergrammar
問題
question; problem (on a test); problem; issue; matter; doubt; public discussion; controversy; trouble; difficulty; inconveniencenoun
は
topic markergrammar
深刻
serious; severe; grave; acutena-adjective, noun
だ。
plain copulagrammar