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.  

Example Input: Sentence: Some clock-shift problems could be avoided by adjusting clocks continuously or at least more gradually—for example, Willett at first suggested weekly 20-minute transitions—but this would add complexity and has never been implemented. 
Question: Willett's first suggestion was to change clocks by 20 minutes how often?
Example Output: weekly

Example Input: Sentence: American Idol was nominated for the Emmy's Outstanding Reality Competition Program for nine years but never won. Director Bruce Gower won a Primetime Emmy Award for Outstanding Directing For A Variety, Music Or Comedy Series in 2009, and the show won a Creative Arts Emmys each in 2007 and 2008, three in 2009, and two in 2011, as well as a Governor's Award in 2007 for its Idol Gives Back edition. It won the People's Choice Award, which honors the popular culture of the previous year as voted by the public, for favorite competition/reality show in 2005, 2006, 2007, 2010, 2011 and 2012. It won the first Critics' Choice Television Award in 2011 for Best Reality Competition. 
Question: How many times was American Idol nominated for an Emmy?
Example Output: nine

Example Input: Sentence: Legislative powers are exercised by a 300-member elective unicameral Parliament. Statutes passed by the Parliament are promulgated by the President of the Republic. Parliamentary elections are held every four years, but the President of the Republic is obliged to dissolve the Parliament earlier on the proposal of the Cabinet, in view of dealing with a national issue of exceptional importance. The President is also obliged to dissolve the Parliament earlier, if the opposition manages to pass a motion of no confidence. 
Question: How often are elections help for parliament?
Example Output:
every four years