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Sentence analysis
6Spans
Sentence
Span Details
警察
police; police officer; police station; self-appointed enforcer; busybody; vigilante; gatekeepernoun, noun suffix
は
topic markergrammar
ようやく
finally; at last; barely; narrowly; only just; gradually; little by little-> 漸くadverb
事件
incident; case; affair; eventnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
糸口を開いた。
find a clue; get a lead; make a beginning-> 糸口を開くexpression, verb