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Sentence analysis
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Sentence
Span Details
環太平洋
Pacific Rimnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
国々
countries; nationsnoun
が
subject markergrammar
会議
meeting; conference; sessionnoun, suru verb
に
direction, time, indirect object, or target markergrammar
参加
participation; joining; entrynoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar