1. What name is given to a swimming pool whose positioning gives the impression that it merges into the surrounding landscape, especially the sea?
2. In which television Western drama did Burton Reynolds first become famous?
3. Which part of the human body is measured using the cephalix index?
4. What does a lapidarist work with?
5. Which British surgeon pioneered antiseptic surgery?
6. Hillary Clinton was born and raised in which American city?
7. The PDSA Dickin Medal is an award for animal bravery (it is commonly referred to as "the animals' Victoria Cross"); the medal was awarded 54 times between 1943 and 1949, which sort of animal won the most medals during this period?
8. "Goodbye, Piccadilly, farewell, Leicester Square!" are chorus lines from which song popular among soldiers in the First World War?
9. A Kingdom Hall is a place of worship used by which group of people?
10. Which sweet North American soft drink is traditionally made from the sassafras tree?
11. What name is given to the network of secret routes and safe houses established in the United States in the mid-19th century to help slaves escape to the free states and Canada?
12. Who is Shawn Corey Carter married to?
13. Which British chocolate and confectionery maker based in York, was founded in 1767, and in 1993 taken over by Kraft Foods?
14. What number is represented by the roman numerals CM?
15. What was directed by Ridley Scott at Gold Hill in Shaftesbury, Dorset, in 1973?