instruction:
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.  
question:
Sentence: Seattle annually sends a team of spoken word slammers to the National Poetry Slam and considers itself home to such performance poets as Buddy Wakefield, two-time Individual World Poetry Slam Champ; Anis Mojgani, two-time National Poetry Slam Champ; and Danny Sherrard, 2007 National Poetry Slam Champ and 2008 Individual World Poetry Slam Champ. Seattle also hosted the 2001 national Poetry Slam Tournament. The Seattle Poetry Festival is a biennial poetry festival that (launched first as the Poetry Circus in 1997) has featured local, regional, national, and international names in poetry. 
Question: How often is the Seattle Poetry festival held?
answer:
biennial


question:
Sentence: The Transat AG2R Race, held every alternate year, is an event which originates in Concarneau in Brittany, France, reaching St. Barthélemy. It is a boat race with boats of 10 m length with a single hull and with essential safety equipment. Each boat is navigated by two sailors. Kitesurfing and other water sports have also become popular on the island in recent years, especially at Grand Cul-de-Sac beach (Baie de Grand Cul de Sac) for windy sports as kitesurfing and Saint Jean Beach ( Baie de Saint Jean), Lorient, Toiny and Anse des Cayes for surfing. Tennis is also popular on the island and it has several tennis clubs, Tennis Clube de Flamboyant in Grand Cul-de-Sac, AJOE Tennis Club in Orient and ASCO in Colombier. 
Question: How often is the AG2R Race held?
answer:
every alternate year


question:
Sentence: During the period from 1993 to 2011, FBI agents fired their weapons on 289 occasions; FBI internal reviews found the shots justified in all but 5 cases, in none of the 5 cases were people wounded. Samuel Walker, a professor of criminal justice at the University of Nebraska Omaha said the number of shots found to be unjustified was "suspiciously low." In the same time period, the FBI wounded 150 people, 70 of whom died; the FBI found all 150 shootings to be justified. Likewise, during the period from 2011 to the present, all shootings by FBI agents have been found to be justified by internal investigation. In a 2002 case in Maryland, an innocent man was shot, and later paid $1.3 million by the FBI after agents mistook him for a bank robber; the internal investigation found that the shooting was justified, based on the man's actions. 
Question: How many times did FBI agents first their weapons from 1993 to 2011?
answer:

289