193902
Progress M-18M ( ) , identified by NASA as Progress 50 or 50P , is a Progress spacecraft used by Roskosmos to resupply the International Space Station during 2013 .
 NASA, Roskosmos
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NASA, Roskosmos