Which groundbreaking product design approach first integrated natural language processing with user experience to create adaptive language learning systems?

The field of language technology has seen remarkable innovations in product design over the years. These advancements have revolutionized how we interact with language learning tools, translation services, and communication platforms. This trivia question focuses on a significant design breakthrough that changed how language products are developed and marketed globally. Test your knowledge about this pivotal moment in language technology product design!

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The Nielsen-Chomsky Framework (2011)
Duolingo's Spaced Repetition System (2012)
The Oxford-Cambridge Linguistic Interface (2009)
Google's Translation Memory Architecture (2014)