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Sentence analysis
8Spans
Sentence
Span Details
定説
established theory; accepted viewnoun
に
direction, time, indirect object, or target markergrammar
挑戦
challenge; attempt; defiancenoun, suru verb
する
light/support verb with a noun or noun-like phrasegrammar
研究
research; study; investigationnoun, suru verb
が
subject markergrammar
増え
increase; multiply; grow in number-> 増えるichidan verb
ている。
ongoing or resultant stategrammar