2582
The tentative agreement has the unanimous endorsement of the  IAM  (  International Association of Machinists and Aerospace Workers  ) negotiating committee and will be presented to members for a ratification vote which will take place in 3-5 days said the union which launched a strike on September 6 in a dispute over contracts for the firm's machinists .
 alternate names: IAM, International Association of Machinists and Aerospace Workers
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: IAM, International Association of Machinists and Aerospace Workers