4961
U . S . Patent Office determines 6 Washington Redskins trademarks are offensive to Native Americans . http://t.co/qkP11AF0XF
 U . S ., Patent Office, Washington Redskins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 U . S ., Patent Office, Washington Redskins