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The first hints of the coming realignment came in December 2009 , when Big Ten commissioner Jim Delany announced that the league would consider adding one or more teams .
 Big Ten, Jim Delany
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Big Ten, Jim Delany