Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Let me give you an example: In 1582 the united provinces invited francis, duke of anjou to lead them; but after a failed attempt to take antwerp in 1583, the duke left the netherlands again. after the assassination of william of orange (10 july 1584), both henry iii of france and elizabeth i of england declined the offer of sovereignty. however, the latter agreed to turn the united provinces into a protectorate of england (treaty of nonsuch, 1585), and sent the earl of leicester as governor-general. this was unsuccessful and in 1588 the provinces became a confederacy. the union of utrecht is regarded as the foundation of the republic of the seven united provinces, which was not recognized by the spanish empire until the peace of westphalia in 1648.
The answer to this example can be: In what year did francis, duke of anjou leave the netherlands?
Here is why: The generated question is perfect. Because the question is based on second sentence of the input passage and its answer is 1583.

OK. solve this:
A star usually is someone who has become famous in sports, film, or pop music, someone like singer Michael Jackson. In the middle nineteen eighties, Michael Jackson successfully made a famous record, which quickly became the most popular recording in the history of music. This made Michael Jackson a bright star. One of the famous sports bright stars in the United States is Mohammed Ali. When he was a young man, he won a gold medal in the Olympic Games as a boxer. Then, he won first place in the world heavy weight boxing match. Before long, he was known as one of the greatest and most famous boxers in sports history. Everyone knows his name. Like the stars in the sky, a bright star will lose his brightness as time passes. He is loved by millions of people today, but will be forgotten tomorrow.
Answer:
What does this passage mainly talk about?