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In February 2009 , Guy Walks Into A Bar , the producers of Elf , signed on to produce Caldwell 's second feature screenplay Glory Days ( written with writing partner , Travis Oberlander ) .
 Caldwell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Caldwell