14619
To avoid some of these shortcomings while retaining the desired attributes of the carboxylic acid moiety , medicinal chemists often investigate the use of carboxylic acid ( bio ) isosteres .
 Chemical: carboxylic acid; Chemical: carboxylic acid
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: carboxylic acid, carboxylic acid 
Answer:
 Chemical: carboxylic acid; Chemical: carboxylic acid