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Sentence analysis
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Sentence
Span Details
火山活動
volcanic activitynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
監視
monitoring; surveillance; observation; watchingnoun, suru verb
が
subject markergrammar
強化
strengthening; reinforcement; enhancement; reinforcement (psychology)noun, suru verb
され
passive, potential, or respect auxiliary-> されるgrammar
た。
past tense or completed actiongrammar