2453
In addition , working memory processing in ecstasy users has been shown to be associated with neural alterations in hippocampal and / or cortical regions as measured by functional magnetic resonance imaging ( fMRI ) .
 Chemical: ecstasy
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: ecstasy 
Answer:
 Chemical: ecstasy