1491
While the use of MDMA in quantities that may be considered " moderate " is not associated with impaired memory functioning , heavy use of MDMA use may lead to long lasting memory impairments .
 Chemical: MDMA; Disease: impaired memory functioning; Chemical: MDMA; Disease: memory impairments
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: MDMA; Disease: impaired memory functioning; Chemical: MDMA; Disease: memory impairments