Kokoro, by Natsume Soseki (paragraph #789)

「先生帽子が落ちました」

translation

"Teacher's hat fell off."

kanji (pronunciations & definitions)
先生: teacher (せんせい), instructor, master, sensei, title or form of address for a teacher, master, doctor, lawyer, etc. 帽子: hat (ぼうし), cap 帽子: hat (ぼうし), cap : slip (おち), slip (オチ), omission, omission, upshot

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