9643
Mark Klein is a former technician who leaked knowledge of his company's cooperation with the  United States   National Security Agency  in installing network hardware to monitor and process American telecommunications .
 alternate names: United States, National Security Agency
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:
 alternate names: United States, National Security Agency