《辽史·列传·卷十二》
只有我的叔叔在先朝受到优厚之礼遇，身死之后，不肖之子因为犯罪被籍没了家产，一年四季祭奠无人，皇上如果能在叔叔的诸位孙子之中赦免一人以主持祭祀，我的愿望就满足了。 
惟臣叔先朝优遇，身殁之后，不肖子坐罪籍没，四时之荐享，诸孙中得赦一人以主祭，臣愿毕矣。 
Only my uncle was treated generously in the previous dynasty, and after his death, his unworthy son was deprived of his family property because of his crime, and no one for four seasons to pay homage to him, if your majesty will pardon one of my uncle's grandsons to preside over the sacrifice, my wish will be fulfilled.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 惟臣叔先朝优遇，身殁之后，不肖子坐罪籍没，四时之荐享，诸孙中得赦一人以主祭，臣愿毕矣。  [/INST] Only my uncle was treated generously in the previous dynasty, and after his death, his unworthy son was deprived of his family property because of his crime, and no one for four seasons to pay homage to him, if your majesty will pardon one of my uncle's grandsons to preside over the sacrifice, my wish will be fulfilled.</s>
Explain the meaning of this Classical Chinese passage in English: 惟臣叔先朝优遇，身殁之后，不肖子坐罪籍没，四时之荐享，诸孙中得赦一人以主祭，臣愿毕矣。
user
Only my uncle was treated generously in the previous dynasty, and after his death, his unworthy son was deprived of his family property because of his crime, and no one for four seasons to pay homage to him, if your majesty will pardon one of my uncle's grandsons to preside over the sacrifice, my wish will be fulfilled.
assistant