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Those who participated in the event included , Jon Stewart , David Letterman , Tina Fey , Amy Poehler , Nathan Lane , Regis Philbin , Robert De Niro , and Martin Scorsese .
 person: Jon Stewart; person: David Letterman; person: Tina Fey; person: Amy Poehler; person: Nathan Lane; person: Regis Philbin; person: Robert De Niro; person: Martin Scorsese
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Jon Stewart, David Letterman, Tina Fey, Amy Poehler, Nathan Lane, Regis Philbin, Robert De Niro, Martin Scorsese 
Answer:
 person: Jon Stewart; person: David Letterman; person: Tina Fey; person: Amy Poehler; person: Nathan Lane; person: Regis Philbin; person: Robert De Niro; person: Martin Scorsese