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Tesla's CEO  Elon Musk  has said he envisions  Tesla  as an independent automaker aimed at eventually mass-producing fully electric cars at a price affordable to the average consumer .
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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: Elon Musk, Tesla