8951
RIA news agency quoted an army source accusing rebel fighters of failing to turn up for joint Russian-Chechen police patrols in some districts of the capital Grozny on Tuesday .
 Grozny, RIA, Russian-Chechen
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:
 Grozny, RIA, Russian-Chechen