Problem: Given the question: Generate a question about the topic "World Trade Center" whose answer would be: The original World Trade Center featured landmark twin towers, which opened on April 4, 1973 and were destroyed in the September 11 attacks of 2001, along with 7 World Trade Center..
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The answer is:
how old were the twin towers when destroyed?

Problem: Given the question: Generate a question about the topic "Consumer Price Index" whose answer would be: The CPI in the United States is defined by the Bureau of Labor Statistics as "a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services.".
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The answer is:
who reports the consumer price index?

Problem: Given the question: Generate a question about the topic "Richard Nixon" whose answer would be: Richard Milhous Nixon (January 9, 1913 April 22, 1994) was the 37th President of the United States , serving from 1969 to 1974, when he became the only president to resign the office..
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The answer is:
when president nixon resigns?