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Sentence analysis
6Spans
Sentence
Span Details
洞窟
cave; cavern; grottonoun
は
topic markergrammar
自然
nature; the natural world; natural; spontaneous; automatic; naturally; spontaneously; automaticallynoun, na-adjective, adverb
の
possession, attribution, nominalizer, or nominal linkergrammar
空洞
cavity; hollow; cavern; cavernousnoun, no-adjective
だ。
plain copulagrammar