You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: IT'S NOT UNUSUAL 
Clue: From 1938 to 2003, Volkswagen hatched more than 20 million cars of this model
the beetle

Category: EUROPEAN CAPITALS 
Clue: This capital lies on the Attica Plain surrounded by mountains including Parnes & Hymettus
athens

Category: IF THEY MARRIED... 
Clue: If supermodel Klum catwalks down the aisle with "Tiny Bubbles" singer Don, she'd be...

heidi ho