Provided the input sentence, you're expected to write a question that involves event "frequency", which refers to how often an event is likely to be repeated. For example, "taking showers" typically occurs ~5 times a week, "going to Saturday market" usually happens every few weeks/months, etc. Don't create questions which have explicit mentions of answers in the text. Instead, it has to be implied from what is given. In other words, we want you to use "instinct" or "common sense". Also, the written questions are not required to have a single correct answer.

Example Input: Sentence: For example, you can undo the tarnish on copper pennies by placing them in vinegar.
Example Output: How often do you place pennies in vinegar?

Example Input: Sentence: Triumph and Disaster: The 20th century saw a stupendous release of energies that had been pent up for the 250 years of Tokugawa isolation.
Example Output: How often did 20th century Japan experience conflicts?

Example Input: Sentence: In 1996 the WHO found that much of the population existed in a state of ``semi-starvation.''.
Example Output:
How often does the WHO find out facts about the population?

