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These results show that thiamine pyrophosphate significantly prevents oxidative damage induced by cisplatin in brain tissue , while the protective effect of thiamine is insignificant .
 Chemical: thiamine pyrophosphate; Chemical: cisplatin; Chemical: thiamine
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: thiamine pyrophosphate, cisplatin, thiamine 
Answer:
 Chemical: thiamine pyrophosphate; Chemical: cisplatin; Chemical: thiamine