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Sentence analysis
6Spans
Sentence
Span Details
ボランティア
volunteernoun
の
possession, attribution, nominalizer, or nominal linkergrammar
人集め
gathering of people; crowd; throngnoun
に
direction, time, indirect object, or target markergrammar
苦労
trouble; hardship; difficulty; labor; toil; pains; anxiety; worry; concern; caresnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar