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A unit of Mubadala Development Co. Abu Dhabi's investment arm has also bought a 10 percent stake in  Zuffa  owner of the Ultimate Fighting Championship and  World Extreme Cagefighting  .
 None
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: Zuffa, World Extreme Cagefighting