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Barlow ’s contention that water “ must be declared a public trust ” has its basis in her involvement with water rights issues going back to the Canada-US Free Trade Agreement in the 1980s , when water was under consideration as a tradable good under the terms of that agreement .
 person: Barlow; organization: Free Trade Agreement
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: Barlow, Free Trade Agreement 
Answer:
 person: Barlow; organization: Free Trade Agreement