Which language learning brand first pioneered the 'adaptive learning path' storytelling approach, using AI to personalize each user's learning journey in their 2017 rebranding campaign?

The language learning industry has seen remarkable innovations in brand storytelling over the past decade. Companies have leveraged unique narratives and technological advancements to differentiate themselves in a competitive market. This trivia question focuses on a notable breakthrough in how language learning products communicated their value proposition to consumers through strategic brand storytelling that changed industry perceptions.

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Duolingo with its 'Language DNA' campaign
Babbel with its 'Linguistic Fingerprint' initiative
Rosetta Stone with its 'Personal Language Blueprint' strategy
Memrise with its 'Cognitive Mapping' approach