128095
During his career Summers flew numerous prototype aircraft first flights , ( a record of 54 by a test pilot ) , from the Supermarine Spitfire , to the Vickers Valiant .
 Summers, Supermarine, Vickers
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Summers, Supermarine, Vickers