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Nanyang University  was merged with the University of Singapore in  1980  to form the National University of Singapore ( NUS ) in part due to the government's desire to pool the two institutions ' resources into a single stronger entity and promote the English language as Singapore's only main language .
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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:
 NA: Nanyang University, 1980