6164
Assigning of the carbon nanotube type was done by a combination of high-resolution transmission electron microscopy ( HRTEM ) , Raman spectroscopy , and density functional theory ( DFT ) calculations .
 person: Raman
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Raman 
Answer:
 person: Raman