10007
N - acetylgalactosamine functionalized mixed micellar nanoparticles for targeted delivery of siRNA to liver .
 Chemical: N - acetylgalactosamine
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: N - acetylgalactosamine 
Answer:
 Chemical: N - acetylgalactosamine