171512
Built into a hillside that had to be extensively cut away in 1958 and 1959 , the estate comprises 640 flats in five linear blocks of 10 to 14 storeys .
 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