"What does the fox say?"
Translation:Τί λέει η αλεπού ;
The accent is used on a few one-syllable words to distinguish words which otherwise would have the same spelling (similar to French ou, où; a, à).
These include η, ή (the, or) - πως, πώς (that, how) - που, πού (that/which, where). According to older grammar books, this may also include τι, τί, but I don't think the unaccented τι (= because) is used much any more and so newer spelling rules seem to be to allow the question word τί (= what) to be spelled without an accent as there is no real risk of confusion.