360719
The book 's title is a reference to the Richter scale , on which 10 was considered ( when the scale was devised ) to be the most power an earthquake was likely to ever have .
 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