286097
In the first phase of the program , NASA provided a combined $ 50 million in 2010 to five American companies , intended to foster research and development into human spaceflight concepts and technologies in the private sector .
 NASA
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