191601
Pringle signed an extension to his Derby deal to take him through to the end of the 2010 – 11 season on 11 December 2009 .
 Pringle, Derby
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pringle, Derby