Sorry - it made no difference to the final result, but in tonight's sleb show I'm sure that I saw a bit of a howler, The question asked words to the effect of 'The Mayan site of Chichen Itza and the Incan site of Macchu Picchu can be found on which continent?'
What's wrong with this picture? Well, the answer given as correct was South America. Which is a problem when you consider that Chichen Itza is in Mexico, which is part of North America. Even if that had been given as the correct answer, it would still have been a problem, since Macchu Picchu is very definitely in Peru, in South America.
I'm really surprised that this one made it onto the show - and we can't blame John Humphrys for mucking up the question this time, since it's the question which is just plain wrong.