10555
Under pressure , the Blackfeet ceded the mountainous parts of their treaty lands in 1895 to the federal government ; it later became part of the park .
 organization: Blackfeet
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: Blackfeet 
Answer:
 organization: Blackfeet