9841
Sakai , near the regional commercial centre of Osaka , has been hit hardest by the deadly bacteria , with nearly 6,500 , mostly schoolchildren , affected by the disease .
 Osaka, Sakai
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:
 Osaka, Sakai