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After five seasons of college football for the Penn State Nittany Lions , Szczerba signed with the Dallas Cowboys as an undrafted free agent after the 2012 NFL Draft .
 Penn State Nittany Lions, Dallas Cowboys
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Penn State Nittany Lions, Dallas Cowboys