2383
The rules committee considered widening the playing field to " open up " the game , but Harvard Stadium ( the first large permanent football stadium ) had recently been built at great expense ; it would be rendered useless by a wider field .
 Harvard Stadium
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harvard Stadium