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-DOCSTART- RT @HCSOTexas : VOLUNTEERS : we 've received a lot of inquiries about where / how to help . Here you go , @RedCrossHouston # harvey # hounews https://t.co/daB0YvUqde
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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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