3488
you see a small gold chip on it , and that tells us who you are , and it tells us you ' re authorized to go in , and it opens the door .
 you, us, who, you, us, you
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 you, us, who, you, us, you