18891
The series also borrows the title ' Underbelly ' from a previously successful series of 12 True Crime novels by the same authors , three direct tie-in novels were also later published as part of this series , and a separate 16th book ( Underbelly : The Golden Casket ) was published in 2010 .
 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