24003
After weeks of shadowing ITV , LNN debuted on air on 1 January 1993 as Carlton replaced Thames Television as London 's weekday ITV franchise .
 ITV, Thames Television, ITV
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 ITV, Thames Television, ITV