Which language learning company's famous commercial catchphrase "¿Dónde está la biblioteca?" became a cultural phenomenon and was parodied in TV shows like Community and Family Guy?

In the world of linguistics and language learning, marketing has played a crucial role in popularizing certain approaches and methodologies. Some campaigns have been so successful they've become cultural touchstones, influencing how millions engage with language learning. This trivia question explores one of the most successful language-learning marketing campaigns that transformed an industry and introduced distinctive advertising elements that remain recognizable decades later.

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Rosetta Stone
Berlitz
Duolingo
Babbel