Misc: Who hid in a house at 263 Princengracht, Amsterdam, for two years?

Questions

What is the official language of Cambodia?

Which French brothers were responsible for the development of cinematography?

Which Panamanian boxer's nickname, translated into English, means "hands of stone" or "stone fists"?

Which is the only work by Dukas most people have ever heard of?

The film "The Innocents" was based on which Henry James story?