1082
This reaction is done a second time to yeid a dimer of modified tyrosine residues that have been further cyclized via Pictet-Spengler reaction , yielding a bicyclic ring moiety .
 person: Pictet-Spengler
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: Pictet-Spengler 
Answer:
 person: Pictet-Spengler