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From 1991 until 1996 he was president of the employers federation VNO and , after the merger with NCW , of the VNO-NCW .
 VNO-NCW
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 VNO-NCW