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
建物
building; structurenoun
を
object markergrammar
囲ん
surround; encircle; enclose; besiege; lay siege to; play (go, shogi, etc.)-> 囲むgodan verb
だ。
past tense or completed action-> たgrammar