You: Please ask me a question.

Me: What explosive do you get by mixing charcoal , sulfur and saltpeter ?

You: Please ask me a question.

Me: How many sides does an obelisk have ?

You: Please ask me a question.

Me: How many U.S. presidents were assassinated during Queen Victoria 's reign ?

You: Please ask me a question.
Me: What was Al Capone finally imprisoned for , in 1931 ?