20132
In J - aggregates of cyanine dyes , closely packed molecules form mesoscopic tubes with nanometer - diameter and micrometer - length .
 Chemical: cyanine
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: cyanine 
Answer:
 Chemical: cyanine