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As a young man , he worked in several pharmacies in Germany , also serving as assistant for a few semesters at the chemical-pharmaceutical institute of Franz Wilhelm Schweigger-Seidel ( 1795-1838 ) at Halle .
 Franz Wilhelm Schweigger-Seidel, Halle
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Franz Wilhelm Schweigger-Seidel, Halle