83852
Rings with transannular strain have faster S1 , S2 , and free radical reactions compared to most smaller and normal sized rings .
 location: S1
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: S1 
Answer:
 location: S1