26048
Overcoming these challenges is complicated by fragmented responsibilities for water management in Greater Mexico City : Given the size and political importance of Greater Mexico City , a major flood or a major water supply interruption would be a national political crisis potentially threatening the stability of the federal government .
 Greater Mexico, Greater Mexico
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Greater Mexico, Greater Mexico