12043
Via the Fritsch–Buttenberg–Wiechell rearrangement , alkynes are prepared from vinyl bromides .
 person: Fritsch–Buttenberg–Wiechell
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: Fritsch–Buttenberg–Wiechell 
Answer:
 person: Fritsch–Buttenberg–Wiechell