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Comcast SportsNet Mid-Atlantic ( CSN Mid-Atlantic ) is a regional sports network of the NBC Sports Group that delivers live-game coverage and sports news and entertainment television programming to more than 4.7 million households throughout the Washington , D.C. and Baltimore region of the United States .
 Comcast SportsNet Mid-Atlantic, Mid-Atlantic, NBC Sports Group, Washington , D.C., Baltimore, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Comcast SportsNet Mid-Atlantic, Mid-Atlantic, NBC Sports Group, Washington , D.C., Baltimore, United States