Problem: Who wrote the book and presented the recent t.v. series 'The Diamond Queen'?
Answer: andrew marr

Problem: Mariachi is a style of Mexican 'street (what?)'?
Answer: music

Problem: Which comedienne presents the Radio 4 panel game 'Dilemma' and co-presents 'The Great British Bake-Off'?
Answer: sue perkins

Problem: Besides the Caucasus, what mountain range forms the border of Europe and Asia?
Answer:
ural mountains