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In some developing countries , grain in the form of rice , wheat , millet , or maize constitutes a majority of daily sustenance .
 plant: rice; plant: wheat; plant: millet; plant: maize
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: rice, wheat, millet, maize 
Answer:
 plant: rice; plant: wheat; plant: millet; plant: maize