17705
Although the present study cannot determine the underlying reasons for the similar figures , the result provides an indication that the margin between individual - level and population - level benchmarks derived from SSD approaches can be very small .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None