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The project was started by  Carnegie Mellon University  ( Pittsburgh ) Professor  Luis von Ahn  ( creator of reCAPTCHA ) and his graduate student Severin Hacker and then developed also with Antonio Navas Vicki Cheung Marcel Uekermann Brendan Meeder Hector Villafuerte and Jose Fuentes .
 employee of: Carnegie Mellon University, Luis von Ahn
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:
 employee of: Carnegie Mellon University, Luis von Ahn