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The first video games were simple extensions of electronic games using video-like output from large room-size computers in the 1950 s and 1960 s , while the first video games available to consumers appears in 1972 through way of the Magnavox Odyssey home console , and the 1971 release of the arcade game " Computer Space " , followed the next year by " Pong " .
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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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