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The competition between papers for having more cartoons than the rest from the mid-1920 s , the growth of large-scale newspaper advertising during most of the thirties , paper rationing during World War II , the decline on news readership ( as television newscasts began to be more common ) and inflation ( which has caused higher printing costs ) beginning during the fifties and sixties led to Sunday strips being published on smaller and more diverse formats .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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