2047
Rg1 , as a ginsenoside extracted from Panax ginseng , could ameliorate spatial learning impairment .
 Rg1, ginsenoside, learning impairment
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Rg1, ginsenoside, learning impairment