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A typical seed coating can include a nutrient layer — containing nitrogen , phosphorus , and potassium , a rhizobia l layer — containing symbiotic bacteria and other beneficial microorganisms , and a fungicide ( or other chemical ) layer to make the seed less vulnerable to pests .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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