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-DOCSTART- UPDATE : Houston considers opening another major shelter , FEMA funds feel pinch already . https://t.co/4MiSWBL1gJ # Harvey # HoustonFlooding https://t.co/ZoxzL9UYix
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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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