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An 11 - year - old boy was given halothane , nitrous oxide and oxygen , pancuronium 0 . 4 mg and suxamethonium 100 mg for induction of anaesthesia .
 Chemical: halothane; Chemical: nitrous oxide; Chemical: oxygen; Chemical: pancuronium; Chemical: suxamethonium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: halothane; Chemical: nitrous oxide; Chemical: oxygen; Chemical: pancuronium; Chemical: suxamethonium