Q: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Yegor Kuzmich Ligachev ( , born 29 November 1920 ) is a Soviet politician .
A:
Yegor Kuzmich Ligachyov ( Ligachev ; ; born 29 November 1920 ) is a Soviet politician who was a high-ranking official in the Communist Party of the Soviet Union ( CPSU ) .