1928
The residual serum concentrations of oxazepam , temazepam and zopiclone were analysed .
 Chemical: oxazepam; Chemical: temazepam; Chemical: zopiclone
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: oxazepam, temazepam, zopiclone 
Answer:
 Chemical: oxazepam; Chemical: temazepam; Chemical: zopiclone