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Sentence analysis
8Spans
Sentence
Span Details
中間圏発光現象
transient luminous eventnoun
は
topic markergrammar
雷雲
thundercloudnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
上空
sky; the skies; upper airnoun
で
location, means, or scope markergrammar
観測
observation; survey; measurement; opinion; prediction; thinkingnoun, suru verb
される。
passive, potential, or respect auxiliarygrammar