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The four previous seasons had seen the team strengthening introductions of Mark Waugh , Shane Warne , Michael Slater and Glenn McGrath in each of the respective seasons .
 Mark Waugh, Shane Warne, Michael Slater, Glenn McGrath
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mark Waugh, Shane Warne, Michael Slater, Glenn McGrath