5994
Gradually , Bismarck subdued the more restive elements of the middle class with a combination of threats and reforms , reacting to the revolutionary sentiments expressed in 1848 by providing them with the economic opportunities for which the urban middle sectors had been fighting .
 person: Bismarck
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: Bismarck