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Marianne and Richard von Weizsäcker married in 1953 , and have four children , including Robert K. von Weizsäcker , Professor of Economics .
 person: Marianne; person: von Weizsäcker; person: Robert K. von Weizsäcker
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: Marianne; person: von Weizsäcker; person: Robert K. von Weizsäcker