410
He became friends with poets Anna Akhmatova and Boris Pasternak , as well as Natalya Gorbanevskaya and Joseph Brodsky .
 person: Anna Akhmatova; person: Boris Pasternak; person: Natalya Gorbanevskaya; person: Joseph Brodsky
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Anna Akhmatova; person: Boris Pasternak; person: Natalya Gorbanevskaya; person: Joseph Brodsky