19849
OBJECTIVES : We investigated whether acupuncture ameliorates cravings induced by smoking - related visual cues , and we explored the neural mechanisms underlying the effects of acupuncture on modulating smoking urges .
 None
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:  
Answer:
 None