178991
Barbadian recording artist Rihanna has released seven studio album s , two compilation album s , two remix album s and forty-seven single s ( including nine as a featured artist and two charity singles ) .
 Rihanna
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rihanna