28998
In 1931 , Aburel was the first to describe blocking the lumbar plexus during early labor , followed by a caudal epidural injection for the expulsion phase .
 person: Aburel
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: Aburel 
Answer:
 person: Aburel