103100
On his release he resolved to devote the rest of his life to bettering the condition of those whose lot he had for a time shared , and he travelled much over Europe for the purpose of studying the various systems of prison discipline , and wrote several books on the subject .
 None
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:  
Answer:
 None