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Jan Baptist van Helmont , who discovered several gases such as carbon dioxide , performed the first quantitative experiment .
 person: Jan Baptist van Helmont
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Jan Baptist van Helmont 
Answer:
 person: Jan Baptist van Helmont