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Evaluation of the effects of venlafaxine and pregabalin on the carbon dioxide inhalation models of Generalised Anxiety Disorder and panic .
 Chemical: venlafaxine; Chemical: pregabalin; Chemical: carbon dioxide
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, carbon dioxide 
Answer:
 Chemical: venlafaxine; Chemical: pregabalin; Chemical: carbon dioxide