28850
Although the earliest historical records of Copenhagen are from the end of the 12th century , recent archaeological finds in connection with work on the city 's metropolitan rail system revealed the remains of a large merchant 's mansion near today 's Kongens Nytorv from c .
 Copenhagen, Kongens Nytorv
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Copenhagen, Kongens Nytorv