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Adults feed on flower nectar from various low-growing plants , including Labrador tea , wild strawberry , blackberry , bird 's - foot violet , winter cress , red clover , lilac , vervain , Carolina larkspur and wild hyacinth .
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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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