151840
The book is based partly on Rølvaag 's personal experiences as a settler , and on the experiences of his wife ’s family who had been immigrant homesteaders .
 person: Rølvaag
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: Rølvaag 
Answer:
 person: Rølvaag