79947
As of February 2011 , there were 873 CNG refueling sites , 2,589 LPG sites , and 40 LNG sites , led by California with 215 CNG refueling stations in operation , 228 LPG sites and 32 LNG sites .
 California
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:
 California