Question: The Lords of the Akō Domain in Harima Province associated with the story of what 18th-century historical event in Japan in which a band of "rōnin" (leaderless samurai) avenged the death of their master?
Sentence (from "Asano clan"): The Asano clan (淺野氏 , Asano-shi ) was a Japanese samurai clan that claimed descent from the Minamoto clan.
Relevant evidence: No