9566
This reaction proceeds as a concerted [ 3 + 2 ] cycloaddition in the same mechanism as the Huisgen 1,3 - dipolar cycloaddition .
 person: Huisgen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Huisgen