24990
Informations on these perturbing dark states were achieved through previous partial investigations of hot bands in high resolution Fourier transform spectra recorded at 22 micro m in Giessen ( for 3nu9 - 2nu9 and 3nu9 - nu5 ) , at 12 micro m in Denver ( for 3nu9 - nu9 ) , and at 11 micro m in Orsay ( for nu5 + nu9 - nu9 ) .
 None
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:  
Answer:
 None