51416
In 2010 , he had one regular and three running on non-fossil power sources ; one for hydrogen , one for vegetable oil , and one for biodiesel .
 vegetable oil
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:
 vegetable oil