84443
One hundred asteroids had been located by mid-1868 , and in 1891 the introduction of astrophotography by Max Wolf accelerated the rate of discovery still further .
 person: Max Wolf
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Max Wolf 
Answer:
 person: Max Wolf