73435
In 1835 he became concert master ( Konzertmeister ) at the Gewandhaus in Leipzig and in 1843 professor of violin ( Violinlehrer ) at the Leipziger Konservatorium .
 Leipzig
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Leipzig