7892
Norwegian Confederation of Trade Unions  ( LO ) was founded in 1899 and has had the following leaders : Under World War II  LO  was usurped by the Nazis all other activity was illegal .
 alternate names: Norwegian Confederation of Trade Unions, LO
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: Norwegian Confederation of Trade Unions, LO