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Sentence
Span Details
煙霧質
aerosolnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
研究
research; study; investigationnoun, suru verb
は
topic markergrammar
歴史
historynoun
が
subject markergrammar
古い。
old; aged; antique; long-standing; time-honored; of the distant past; stale; hackneyed; corny; old-fashioned; outmoded; out-of-datei-adjective