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After Labour's strong showing in the 1993 election  Clark  challenged the Labour leadership of Mike Moore and won becoming the Leader of the  Opposition  .
 employee of: Clark, Opposition
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Clark, Opposition 
Answer:
 employee of: Clark, Opposition