27638
Depending upon the location of the electron beam , we demonstrate the conditions under which Fano interferences will be present in both optical and electron spectroscopies ( EELS and CL ) as well as a new class of Fano interferences that are uniquely electron - driven and are absent in the optical response .
 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