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. {@Rochelle Walensky, MD, MPH@} {@President Biden@} - I ’m questioning the CDC director ’s leadership . The new mask guidance is confusing & discriminates against the disabled & children . And to go from “ impending doom ” to this in 45 days ? I ’m on your team , Joe , but I have doubts about Walensky . # COVID19
 person: Rochelle Walensky, MD, MPH; person: President Biden; corporation: CDC; person: Joe; person: Walensky
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
 Entities: Rochelle Walensky, MD, MPH, President Biden, CDC, Joe, Walensky 
Answer:
 person: Rochelle Walensky, MD, MPH; person: President Biden; corporation: CDC; person: Joe; person: Walensky