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and one person whose suit would be blocked is denise johnson if the legislation goes through , the widow of bus driver conrad johnson , the last person killed in the washington , d . c . sniper attacks .
 washington , d . c, d . c, one person whose suit would be blocked, whose, denise johnson, the widow of bus driver conrad johnson , the last person killed in the washington , d . c . sniper attacks, bus driver, bus driver conrad johnson, the last person killed in the washington , d . c . sniper attacks, sniper, bus
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 , d . c, d . c, one person whose suit would be blocked, whose, denise johnson, the widow of bus driver conrad johnson , the last person killed in the washington , d . c . sniper attacks, bus driver, bus driver conrad johnson, the last person killed in the washington , d . c . sniper attacks, sniper, bus