263069
Testing showed that the aircraft had poor handling and was prone to vibration , and it was modified with a 2 ft ( 0.61 m ) longer fuselage and a revised tail , which improved handling .
 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