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UPMC Mercy South Side Outpatient Center is a outpatient and urgent care facility of UPMC Mercy that provides , among other services , diagnostic imaging , same-day surgery , laboratory work , and physicians offices to the residents of Pittsburgh 's South Side neighborhood .
 Side, Pittsburgh, South Side
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Side, Pittsburgh, South Side