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Sentence
Span Details
ボランティア
volunteernoun
が
subject markergrammar
油
-noun
流出
outflow; discharge; spill; leakage; drain; leaknoun, suru verb
の
possession, attribution, nominalizer, or nominal linkergrammar
清掃
cleaning; clean-up; garbage collection; scavengingnoun, suru verb
を
object markergrammar
手伝っ
help; assist; lend a hand; contribute to; be a factor in; help bring about-> 手伝うgodan verb
た。
past tense or completed actiongrammar