Where is the train station "Llanfair­pwllgwyngyll­gogery­chwyrn­drobwll­llan­tysilio­gogo­goch"?

Which American president appears on a one dollar bill?

According to Sherlock Holmes, "If you eliminate the impossible, whatever remains, however improbable, must be the..."

What's the name of Batman's parents?

What does a funambulist walk on?