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For example , Germany implemented a tax incentive of per litre of " sulfur free " fuel ( both gasoline and diesel ) containing less than 10 ppm beginning in January 2003 and average sulfur content was estimated in 2006 to be 3 - 5 ppm .
 Germany
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:
 Germany