Who is “Frog”?

I was going to say… thank you all for taking part in our summer contest  ! – but… I will be honest ,we have not received any answer 🙁  , this must be the most unsuccessful contest ever in the internet !  well, I know there is not so many people interested in books these days, but I am sure somewhere out there must be at least one person interested in a free bilingual ebook ! And just for YOU, our number 1 customer, we are extending the contest for another week. All the correct answers received before the midnight of the 7th September will receive the free e-book! Cheers and thank you!