AnalyzerSentence analysis4SpansSentence洞窟を探検する1000 character limitAnalyzeSentence洞どう窟くつを探たん検けんするSpan Details洞どう窟くつcave; cavern; grottonounをobject markergrammar探たん検けんexploration; expeditionnoun, suru verbするlight/support verb with a noun or noun-like phrasegrammar