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http://nhiro.org.s3.amazonaws.com/1/9/19e499980addf3efef77aac2eeb4d5fd.jpg https://gyazo.com/19e499980addf3efef77aac2eeb4d5fd
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Douglas Engelbart
いきなりですが問題です:彼は何をした人でしょう?
http://commons.wikimedia.org/wiki/File:Douglas_Engelbart_in_2008.jpg
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