398
Fifty - four participants were randomised to receive either placebo , venlafaxine or pregabalin .
 Chemical: venlafaxine; Chemical: pregabalin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: venlafaxine, pregabalin 
Answer:
 Chemical: venlafaxine; Chemical: pregabalin