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The Houston Ship Channel , located in Houston , Texas , is part of the Port of Houston — one of the United States 's busiest seaport s. The channel is the conduit for ocean-going vessels between the Houston-area shipyards and the Gulf of Mexico .
 location: Houston; location: Houston , Texas; location: Houston; location: United States; location: Mexico
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Houston, Houston , Texas, Houston, United States, Mexico 
Answer:
 location: Houston; location: Houston , Texas; location: Houston; location: United States; location: Mexico