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Criteria The criteria for being awarded with the Green Key are involvement in fields such as water , waste , energy , Involvement and Awareness of Guests , Environmental Management , Staff Involvement , Use of Chemicals , Open Spaces and Food , and Beverages .
 Environmental
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Environmental