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Sentence analysis
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Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
理論
theorynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
有効性
validity; effectivenessnoun
を
object markergrammar
証明
proof; verification; certificationnoun, suru verb
する。
light/support verb with a noun or noun-like phrasegrammar