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The breakdown of Rand 's relationship with Nathaniel Branden in 1968 coincided with the closure of the Nathaniel Branden Institute and the expulsion of both Nathaniel and Barbara Branden from Rand 's circle .
 person: Rand; person: Nathaniel Branden; person: Nathaniel Branden; person: Nathaniel; person: Barbara Branden; person: Rand
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: Rand; person: Nathaniel Branden; person: Nathaniel Branden; person: Nathaniel; person: Barbara Branden; person: Rand