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In 1999 Pets at Home acquired Petsmart UK bringing a chain of 140 stores under Pets at Home branding .
 Pets, Home, Petsmart, Pets, Home
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pets, Home, Petsmart, Pets, Home