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Mikhail Gorbachev  brought in his ally Ivashko in to replace the long-serving Volodymyr Shcherbytsky as First Secretary of the  Communist Party  of the Ukrainian SSR on 28 Sep 1989 .
 employee of: Mikhail Gorbachev, Communist Party
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 employee of: Mikhail Gorbachev, Communist Party