35909
On 1990 , fellow blues guitarist Stevie Ray Vaughan , who was touring with Clapton , and three members of their road crew were killed in a helicopter crash between concerts .
 Stevie Ray Vaughan, Clapton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Stevie Ray Vaughan, Clapton