1130
RTRS - Tennis - Muster upset , Philippoussis wins , Stoltenberg loses .
 Philippoussis, RTRS, Muster, Stoltenberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Philippoussis, RTRS, Muster, Stoltenberg