Which brand holds the Guinness World Record for the longest-running advertising campaign with the same slogan?

Test your knowledge about the most impressive and record-breaking advertising campaigns in history! The advertising world is full of remarkable achievements that have set world records - from the most expensive commercial ever produced to campaigns that reached unprecedented audiences. Can you identify these milestone moments that changed the advertising landscape forever?

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De Beers with "A Diamond is Forever" (since 1948)
Coca-Cola with "Taste the Feeling" (since 1936)
Nike with "Just Do It" (since 1952)
Maxwell House with "Good to the Last Drop" (since 1959)