Leave a camera on a mountaintop, and chances are, you'll never see it again. But 24-year-old Paul Bellis, a university student from Wales, believed that most people were better than that, and set up a creative experiment to test out his theory. "I was speaking to a friend who said you can't trust anyone, anywhere these days," Bellis toldthe Daily Mail. "I didn't want to believe _ so I set up this experiment to find out what might happen and prove you can trust people." Billis decided to do an experiment by hiking up a mountain called Snowdonia, taking a photo, and leaving his camera behind. He also attached a note to the camera, asking other hikers to take photos of themselves and then leave the camera there until the roll of film was empty. He also included his address, in case someone would be nice enough to return the camera to his home after the roll of film was finished. Four days later, Bellis got a visit from a Snowdonia park manager, who came to return his camera. After Bellis got the film developed, he saw that his fellow hikers and followed his instructions. Thirty people had each taken photos of themselves at the mountain. From viewing the collection, it was clear that all the hikers had enjoyed the experiment. As for the park manager, Brian, "I found the camera and thought it had been lost until I saw the note," he said. "I was passing his home and just dropped it off. I' m glad that the photos came out very well."

Answer this series of questions:

1. What was the experiment about?
2. Who created it?
3. How old is he?
4. What does he do?
5. From where?
6. Did he think people could be trusted?
7. Where did he go?
8. Named what?
9. What country was that in?
10. What did he leave there?
11. Was anything else left?
12. What?
13. What did the letter say?
14. Was it a digital camera?
15. Did he get his camera back?
16. Who returned it?
17. Then what did he do?
18. How many people had taken pictures?
19. What's the park manager's name?
20. Did he think it was a lost camera?

Numbered answers:
1. trust
2. Paul Bellis
3. 24
4. university student
5. Wales
6. yes
7. up a mountain
8. Snowdonia
9. unknown
10. his camera
11. yes
12. a note
13. asked other hikers to take pictures and leave the camera there
14. no
15. yes
16. a Snowdonia park manager
17. got the film developed
18. 30
19. Brian
20. yes