62793
In the 1840s , Guignard made his mark as a historian and writer .
 person: Guignard
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: Guignard 
Answer:
 person: Guignard