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In  1997  American  University of Sharjah  the only coeducational liberal arts university in the United Arab Emirates signed a two-year contract with AU to provide academic management a contract which has since been extended multiple times through August 2009 .
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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:   
Answer:
 NA: 1997, University of Sharjah