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-DOCSTART- # Houston responding to # Harvey making national headlines . Volunteers stepping up . # TexasTough # MyCity # khou11 @CBSNews @CBSThisMorning https://t.co/qbNiS8LAxS
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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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