Analyzer
Sentence analysis
6Spans
Sentence
Span Details
警察
police; police officer; police station; self-appointed enforcer; busybody; vigilante; gatekeepernoun, noun suffix
が
subject markergrammar
捜査
criminal investigation; inquiry; searchnoun, suru verb, no-adjective
を
object markergrammar
開始
start; beginning; commencementnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar