369
NBC News : Hundreds of Trump supporters stuck on freezing cold Omaha airfield after rally , 7 taken to hospitals . {{URL}} via {@Google News@}
 NBC News, Trump, Omaha, Google News
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 NBC News, Trump, Omaha, Google News