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She suffered an injury in an unusual fashion in early 2010 – while doing sprint training on a track in Volgograd , a young boy walked into her path and she strained her back in the ensuing collision .
 Volgograd
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:
 Volgograd