In this task, you're given passages that contain mentions of a time duration related quesry and we are supposed to write answer to 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.
Note that a lot of the questions could have more than one correct answers. We only need a single most-likely answer. Please try to keep your "answer" as simple as possible. Concise and simple "answer" is preferred over those complex and verbose ones.
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Question: Sentence: DST's clock shifts have the obvious disadvantage of complexity. People must remember to change their clocks; this can be time-consuming, particularly for mechanical clocks that cannot be moved backward safely. People who work across time zone boundaries need to keep track of multiple DST rules, as not all locations observe DST or observe it the same way. The length of the calendar day becomes variable; it is no longer always 24 hours. Disruption to meetings, travel, broadcasts, billing systems, and records management is common, and can be expensive. During an autumn transition from 02:00 to 01:00, a clock reads times from 01:00:00 through 01:59:59 twice, possibly leading to confusion.
Question: During the fall time shift from 02:00 to 01:00, how many times will a clock show the times between 01:00:00 and 01:59:59?

Answer: twice

Question: Sentence: Numerous recordings of Chopin's works are available. On the occasion of the composer's bicentenary, the critics of The New York Times recommended performances by the following contemporary pianists (among many others): Martha Argerich, Vladimir Ashkenazy, Emanuel Ax, Evgeny Kissin, Murray Perahia, Maurizio Pollini and Krystian Zimerman. The Warsaw Chopin Society organizes the Grand prix du disque de F. Chopin for notable Chopin recordings, held every five years.
Question: The Warsaw Chopin Society holds the Grand prix du disque de F. Chopin how often?

Answer: every five years.

Question: Sentence: The mayor of Paris is elected indirectly by Paris voters; the voters of each arrondissement elect the Conseil de Paris (Council of Paris), composed of 163 members. Each arrondissement has a number of members depending upon its population, from 10 members for each of the least-populated arrondissements (1st through 9th) to 36 members for the most populated (the 15th). The elected council members select the mayor. Sometimes the candidate who receives the most votes city-wide is not selected if the other candidate has won the support of the majority of council members. Mayor Bertrand Delanoe (2001-2014) was elected by only a minority of city voters, but a majority of council members. Once elected, the council plays a largely passive role in the city government; it meets only once a month. The current council is divided between a coalition of the left of 91 members, including the socialists, communists, greens, and extreme left; and 71 members for the centre right, plus a few members from smaller parties.
Question: How often does the council meet?

Answer:
once a month