5257
Whereas each distinguishable band is found to originate from a single electronic transition , the bandwidth is determined by the statistical nature of the environment of the fluorenone molecule .
 Chemical: fluorenone
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: fluorenone 
Answer:
 Chemical: fluorenone