81249
This discontent , coupled with ABC changing its timeslot on a number of occasions , led to a huge drop in the show 's ratings after being one of the most-watched television programs in the United States in 1990 .
 ABC, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 ABC, United States