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-DOCSTART- RT @Meagan_Flynn : Day 3 begins . Army Corps of Engineers says " this event has the potential to exceed a , 000-year floodplain threshold " https://t.co/e2h5fGo7MJ
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: exact location, area, road, river 
Text: {0} 
Answer:
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