13225
The effect of the ring size is studied by looking at some well known aromatic and anti - aromatic molecules of different sizes , showing that the linear response is capable of correctly classifying and quantifying the aromaticity for five - to eight - membered aromatic and anti - aromatic molecules .
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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