147778
It now includes a stream-side garden , ornamental garden , xeriscape garden , research area , a greenhouse ( 1550 square feet ) displaying flowering perennials , herb s , and vine s , and a main building .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None