8511
The following year , he worked as a construction worker for the Amur Railway , and in 1913 he was in Tallinn as a worker in a shipyard .
 Amur Railway, Tallinn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Amur Railway, Tallinn