587
Moreover , enantioselectivity was demonstrated by the ability of natural PREGS to be an order of magnitude more effective than its synthetic enantiomer in reversing scopolamine - induced amnesia .
 Chemical: PREGS; Chemical: scopolamine; Disease: amnesia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: PREGS; Chemical: scopolamine; Disease: amnesia