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-DOCSTART- Houston Mayor : Residents should n't let " sanctuary cities " law deter rescue efforts . https://t.co/LIcRhARKon # Harvey # SB4 # Houwx https://t.co/mOG9kZoKB6
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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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