21477
The organic layers were prepared by thermal hydrosilylation of two different alkene molecules with either a long carbon chain ( C11 ) or a shorter one ( C7 ) , and both were modified to be amine - terminated .
 Chemical: carbon; Chemical: amine
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: carbon, amine 
Answer:
 Chemical: carbon; Chemical: amine