1070
However , it is not clear to what extent the anti - fatigue effect of modafinil may be related to its alerting and sympathetic activating effects .
 Chemical: modafinil
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: modafinil 
Answer:
 Chemical: modafinil