Input question: James Buchanan was the only President to never do what?

Output answer: marry

Input question: In ballet, what is the name for a dance duet in which ballet steps are performed together?

Output answer: pas de deux

Input question: For what was Thomas Bewick renowned in the 18th century?

Output answer: wood engraving

Input question: The results of the 2012 RSPB national survey of birds shows the House Sparrow to be the most common bird to be seen in the UK. What is the second most common bird to be seen in the UK overall?

Output answer:
starling