40338
The film 's production began on September 16 , 2013 in Boston , Atlanta , and Los Angeles .
 Boston, Atlanta, Los Angeles
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Boston, Atlanta, Los Angeles