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-DOCSTART- # Harvey : Katy residents float animals out on air mattresses to escape reservoir flooding https://t.co/lC4WN9TGMS via @HoustonChron
 Katy
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:
 Katy