49925
In North America , Australia and Europe , many cable operators have already introduced cable telephone service , which operates just like existing fixed line operators .
 North America, Australia, Europe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 North America, Australia, Europe