191741
Tiny Tafels were traditionally posted to public forums , such as a BBS ( Bulletin Board System ) and are still regularly used today with a number of internet sites that provide a Tafel Matching System , in order to indicate whether two genealogical databases have a probable connection or overlap .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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