Teacher: In this task, you will be presented with a question and you have to answer the question based on your knowledge. Your answers should be as short as possible.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Who were the builders of the mosque in Herat with fire temples ?
Solution: Ghurids
Reason: This is a good example. Ghurids were the builders of the mosque in Herat with fire temples.

Now, solve this instance: What year ( s ) was the best selling album ( s ) released by the artist whose tribute single Candle in the Wind 1997 , rewritten in dedication to Diana , Princess of Wales , sold over 33 million copies worldwide ?
Student:
1974