Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼ら
they; thempronoun
は
topic markergrammar
洞窟
cave; cavern; grottonoun
の
possession, attribution, nominalizer, or nominal linkergrammar
奥深く
profound; deep; deep (of a cave, etc.); innermost; interior-> 奥深いi-adjective
を
object markergrammar
探検
exploration; expeditionnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar