86481
In 1837 , however , Carl August von Steinheil of Munich , Germany , found that by connecting one leg of the apparatus at each station to metal plates buried in the ground , he could eliminate one wire and use a single wire for telegraphic communication .
 Carl August von Steinheil, Munich, Germany
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Carl August von Steinheil, Munich, Germany