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Botanical gardens play an important role in " ex situ " conservation ; for example , seeds of cacti and other succulents are kept in long-term storage at the Desert Botanical Garden , Arizona .
 Desert Botanical Garden, Arizona
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Desert Botanical Garden, Arizona