34753
Messier 's occupation as a comet hunter led him to continually come across fixed diffuse objects in the night sky which could be mistaken for comets .
 person: Messier
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: Messier 
Answer:
 person: Messier