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-DOCSTART- Texas regulators report gas spill due to Harvey . https://t.co/er1EX8qe6a # Harvey # houstonflooding # houwx https://t.co/8d2W3lXbg0
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: exact location, area, road, river 
Text: {0} 
Answer:
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