Answer:
Who is it that rows quickly with four oars, but never comes out from under his own roof?
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
Long and think, red within, with a nail at the end.
What can stand in place of a country but still fold away in a drawer?
What holds names and memories which are not its own?
What is so fragile that saying its name breaks it?