7939
Tharman also serves as the Chairman of the  Ong Teng Cheong  Institute of Labour Studies and Chairman of the Board of Trustees of the  Singapore  Indian Development Association ( SINDA ) .
 None
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: Ong Teng Cheong, Singapore