184031
The idea of re-transmitting a service in a neighbouring area was tried in May 1924 when the Glasgow service called " 5SC " was picked up and rebroadcast on a transmitter in Edinburgh .
 Glasgow, Edinburgh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Glasgow, Edinburgh