Information:  - Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players with a spherical ball. It is played by 250 million players in over 200 countries and dependencies, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by getting the ball into the opposing goal.  - The Canadian Football League (CFL LCF) is a professional sports league in Canada. The CFL is the highest level of competition in Canadian football, a form of gridiron football closely related to American football. Its nine teams, which are located in nine separate cities, are divided into two divisions: the East Division, with four teams, and the West Division with five teams. As of 2016, the league features a 20-week regular season, which traditionally runs from late June to early November; each team plays 18 games with at least two bye weeks. Following the regular season, six teams compete in the league's three-week divisional playoffs, which culminate in the late-November Grey Cup championship, the country's largest annual sports and television event.  - American football, referred to as football in the United States and Canada, and also known as gridiron, is a sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with control of the oval-shaped football, attempts to advance down the field by running with or passing the ball, while the team without control of the ball, the defense, aims to stop their advance and take control of the ball for themselves. The offense must advance at least ten yards in four downs, or plays, or else they turn over the football to the opposing team; if they succeed, they are given a new set of four downs. Points are primarily scored by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal. The team with the most points at the end of a game wins.  - Australian rules football, officially known as Australian football, but also called Aussie rules, football or footy (and in some regions marketed as AFL after the Australian Football League), is a contact sport played between two teams of eighteen players on an oval-shaped field, often a modified cricket ground.  - Frank James Clair ( May 12 , 1917 -- April 3 , 2005 ) was a coach in the Canadian Football League , nicknamed `` the Professor '' for his ability to recognize and develop talent . Clair is the 3rd most successful head coach in the CFL with 147 wins and the most successful head coach in the post-season with 27 victories . As a result , he won the Annis Stukus Trophy as the CFL 's coach of the year in 1966 and 1969 .  - The Grey Cup is the name of both the championship game of the Canadian Football League (CFL) and the trophy awarded to the victorious team playing Canadian football. It is contested between the winners of the CFL's East and West Divisional playoffs and is one of Canadian television's largest annual sporting events. The Toronto Argonauts have 16 championships, more than any other team. The latest, the 104th Grey Cup, took place in Toronto, Ontario, on November 27, 2016, when the Ottawa Redblacks defeated the Calgary Stampeders 3933 in overtime.  - A sports league is a group of sports teams or individual athletes that compete against each other in a specific sport. At its simplest, it may be a local group of amateur athletes who form teams among themselves and compete on weekends; at its most complex, it can be an international professional league making large amounts of money and involving dozens of teams and thousands of players.  - The Annis Stukus Trophy is a Canadian Football League trophy, which is presented annually by the Edmonton Eskimos Alumni Association to the Coach of the Year, as determined by the members of the Football Reporters of Canada. The Trophy is named after former player, coach, and general manager Annis Stukus.  - Annis Paul Stukus (October 25, 1914  May 20, 2006) was a Canadian football player, coach and general manager, and ice hockey general manager.  - Gridiron football, or North American football, is a form of football primarily played in the United States and Canada. The predominant forms of gridiron football are American football and Canadian football.  - A head coach, senior coach, or manager is a professional at training and developing athletes. They typically hold a more public profile and are paid more than other coaches. In some sports, the head coach is instead called the "manager", as in association football and professional baseball. In other sports such as Australian rules football, the head coach is generally termed a senior coach.  - Canadian football is a form of gridiron football played in Canada in which two teams of 12 players each compete for territorial control of a field of play long and wide attempting to advance a pointed prolate spheroid ball into the opposing team's scoring area (end zone).    After reading the paragraphs above, we are interested in knowing the entity with which 'frank clair' exhibits the relationship of 'field of work'. Find the answer from the choices below.  Choices: - american football  - association football  - australian rules football  - cricket  - gridiron football  - ice hockey  - sport  - television  - training
gridiron football