Dov'è la Stazione Ferrovia?

So I am talking with this acquaintance, and the topic of languages one has learned-or-known-but-forgotten comes up. And I realize something interesting--when you forget a language, the one thing that seems to remain is the phrase "Which way to the train station?" It's almost like a stubborn sediment that remains after all other traces of fluency have evaporated up and away. Except, apparently, for Spanish, where this phenomenon takes the form of the infamous "¿Dónde esta la bibilioteca?"

There's proabably a graduate thesis in linguistics in this somewhere-- ..."The Memetic Adhesiveness of Rail Transit Inquiry Structures," or somesuch. All I ask is co-authorship.