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Ecological pyramids begin with producers on the bottom ( such as plants ) and proceed through the various trophic levels ( such as herbivores that eat plants , then carnivores that eat flesh , then omnivores that eat both plants and flesh , and so on ) .
 plant: producers
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: producers 
Answer:
 plant: producers