17189
Using a 785 - nm laser , a Raman imaging system acquired hyperspectral images in the wavenumber range of 102 - 2538 cm ( - 1 ) for a 25 x 25 mm ( 2 ) area of each mixture sample , with a spatial resolution of 0 . 25 mm .
 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