《辽史·列传·卷四十二》
辖底，字涅烈衮，肃祖孙夷离堇剌之子。
辖底，字涅烈衮，肃祖孙夷离堇帖剌之子。
Xia Di, the name Nie liegun, was the son of the great ancestor's grandson Yili Jin La.
<s>[INST] Kindly elucidate the central themes in this passage in English: 辖底，字涅烈衮，肃祖孙夷离堇帖剌之子。 [/INST] Xia Di, the name Nie liegun, was the son of the great ancestor's grandson Yili Jin La.</s>
Kindly elucidate the central themes in this passage in English: 辖底，字涅烈衮，肃祖孙夷离堇帖剌之子。
user
Xia Di, the name Nie liegun, was the son of the great ancestor's grandson Yili Jin La.
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