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PESA ’s most noteworthy contracts are : ( 1 ) a May 29 , 2009 contract worth 1.5 bn złoty ( $ 460 million ) for 186 trams for Warsaw , Poland to replace 40 percent of that city ’s fleet , and ( 2 ) on September 19 , 2012 PESA signed two framework agreements with DB , Deutsche Bahn , German Railways to supply up to 470 Diesel multiple unit ( DMU ) trains for regional and local services , with a total value of up to € 1.2 bn ( $ 1.5 billion ) .
 PESA, Warsaw, Poland, PESA, DB , Deutsche Bahn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 PESA, Warsaw, Poland, PESA, DB , Deutsche Bahn