TED】ケン・ジェニングスワトソンとJeopardyと私、時代遅れの知ったかぶり (Ken Jennings: Watson, Jeopardy and me, the obsolete know-it-all) (【TED】Ken Jennings: Watson, Jeopardy and me, the obsolete know-it-all (Ken Jennings: Watson, Jeopardy and me, the obsolete know-it-all))