69498
Dr. Georg Waltemath was an astronomer from Hamburg , best known for his 1898 claim of a second moon of Earth as well as a system of tiny moons .
 location: Hamburg
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: Hamburg 
Answer:
 location: Hamburg