41334
MTN was the first company to introduce the popular per-second billing system in the country ( also known as " pay as you talk " ) allowing its subscribers to transparently track their talk-time and receive billing summaries via SMS .
 MTN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 MTN