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Several thousand demonstrators also gathered outside the White House in Washington , accompanied by a major security presence .
 Washington, Several thousand demonstrators, the White House in Washington
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 Washington, Several thousand demonstrators, the White House in Washington