1857
Grains such as quinoa , barley , spelt , and millet are marketed as " heritage " or " ancient " superfoods because they have been consumed over centuries , are perceived as a whole food , and require minimal processing .
 barley, spelt, millet
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:
 barley, spelt, millet