Generate a question with a factual answer.
Generated: Which friend took on the role of several jobs to help Chopin including copyist?

Generate a question with a factual answer.
Generated: When was Niccolo Machiavelli's The Prince published?

Generate a question with a factual answer.
Generated: When was the coronation of Elizabeth as Queen?

Generate a question with a factual answer.
Generated: Which has a longer playing time: PAL LaserDiscs or NTSC discs?