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Ben Browder noted the production difficulties that came with Amanda Tapping 's maternity leave , and pointed out that new leaders are brought in routinely into units of the military .
 Ben Browder, Amanda Tapping
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ben Browder, Amanda Tapping