324575
The phase currently under construction is North to South , 16 stations ( 14 underground , 2 elevated ) , 19.05 km ( 17.25 km underground ) , opening 2015 .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None