What is 'Qu'est-ce qu'il y a dans' when translated from French to English?

"What's in...?" is an English equivalent of the incomplete French phrase Qu'est-ce qu'il y a dans...? The question translates literally into English as "What is this that it (he, one, she) has there in...?" The pronunciation will be "keh-skee-lya daw" in French.