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-DOCSTART- RT @CNPalerts : Gas leaks are being reported . Know the signs of a nat'l gas leak by watching this : 30 video . # Harvey https://t.co/zZZgDu86B7
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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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