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Sentence analysis
6Spans
Sentence
Span Details
発痘
outbreak of poxnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
経過
passage of time; elapsing; lapse; progress; development; course of events; transit (astronomy)noun, suru verb
を
object markergrammar
観察
observation; watching; surveynoun, suru verb
する。
light/support verb with a noun or noun-like phrasegrammar