100585
The Riga Wagon Plant is reconstructing these trains , and is planning to manufacture new trains which would replace the " elektrichkas " by 2012 , which by now has been pushed back , to unknown date .
 Riga Wagon Plant
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Riga Wagon Plant