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According to ecofeminist scholar Greta Gaard ( 2001 ) , " at its most inclusive , ecocomposition has the potential to address social issues such as feminism , environmental ethics , multiculturalism , politics , and economics , all by examining matters of form and style , audience and argumentation , and reliable sources and documentation " ( p .
 person: Greta Gaard
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: Greta Gaard 
Answer:
 person: Greta Gaard