Problem: 24 Sussex Drive is the official residence of the Prime Minister of which country?
Answer: canada

Problem: Once known as 'the Jerusalem of the North', which city is the capital of Lithuania ?
Answer: vilnius

Problem: What name is given to the yellow fluid that surroundsand lubricates cartilages in joints?
Answer: synovial fluid

Problem: Who was Britain's longest-serving Foreign Secretary, being in office from December 1905 to December 1916?
Answer:
sir edward grey