Here are the answers to this week's quiz...
1. They all formed their own bands.
2. ISIS, or ISIL.
3. Internet domain names.
4. Diane Abbott, Paul Boateng and Bernie Grant.
5. The Pitcairn Islands.
6. The Warsaw Pact.
7. Gay Pride.
8. A 19th-century stamp from British Guiana.
9. PJ O'Rourke.
10. Toy Story.