360847
In 1820 he was appointed associate professor of natural history and botany , and director of the botanical gardens at the University of Greifswald .
 organization: University of Greifswald
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: University of Greifswald 
Answer:
 organization: University of Greifswald