89065
Throughout his career , Hampden toured and performed with a number of celebrated artists , including Roberta Flack , Chaka Khan , Jennifer Lopez , Bonnie Raitt , India Arie , Stevie Wonder , Dionne Warwick , Little Richard , Gladys Knight , Vanessa Williams , among many others .
 Roberta Flack, Chaka Khan, Jennifer Lopez, Bonnie Raitt, India Arie, Stevie Wonder, Dionne Warwick, Gladys Knight
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roberta Flack, Chaka Khan, Jennifer Lopez, Bonnie Raitt, India Arie, Stevie Wonder, Dionne Warwick, Gladys Knight