214411
Meanwhile , Tucker was scheduled to challenge Michael Spinks for the IBF title with the winner to meet Tyson for right to become the Undisputed Champion .
 Tucker, Michael Spinks, IBF, Tyson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tucker, Michael Spinks, IBF, Tyson