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.  

Ex Input:
Sentence: Illegal pinning methods include using the ropes for leverage and hooking the opponent's clothing, which are therefore popular cheating methods for heels, unless certain stipulations make such an advantage legal. Such pins as these are rarely seen by the referee (as they have to see if their shoulders are down) and are subsequently often used by heels and on occasion by cheating faces to win matches. Even if it is noticed, it is rare for such an attempt to result in a disqualification (see below), and instead it simply results in nullification of the pin attempt, so the heel wrestler rarely has anything to lose for trying it, anyway. 
Question: How often are illegal pinning methods seen by the referee?

Ex Output:
Such pins as these are rarely seen by the referee


Ex Input:
Sentence: Schwarzenegger came out of retirement, however, to compete in the 1980 Mr. Olympia. Schwarzenegger was training for his role in Conan, and he got into such good shape because of the running, horseback riding and sword training, that he decided he wanted to win the Mr. Olympia contest one last time. He kept this plan a secret, in the event that a training accident would prevent his entry and cause him to lose face. Schwarzenegger had been hired to provide color commentary for network television, when he announced at the eleventh hour that while he was there: "Why not compete?" Schwarzenegger ended up winning the event with only seven weeks of preparation. After being declared Mr. Olympia for a seventh time, Schwarzenegger then officially retired from competition. 
Question: How many times did Schwarzenegger win Mr. Olympia before retiring for good?

Ex Output:
seven


Ex 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?

Ex Output:

weekly