16093
In particular , while the vast majority of antidepressant treatments affect either serotonin or noradrenaline or a combination of these two neurotransmitters , it is not known whether there are particular patients or symptom profiles which respond preferentially to the potentiation of serotonin over noradrenaline or vice versa .
 Chemical: serotonin; Chemical: noradrenaline; Chemical: serotonin; Chemical: noradrenaline
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: serotonin, noradrenaline, serotonin, noradrenaline 
Answer:
 Chemical: serotonin; Chemical: noradrenaline; Chemical: serotonin; Chemical: noradrenaline