285307
While the engines were being replaced , a number of other modifications were carried out , including replacing the original nose-mounted radiators with aerofoil-shaped radiators fitted in the upper wing and adding new gravity-fed fuel tanks .
 None
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:  
Answer:
 None