Question: What is the nationality of the FIFA president who attended the ribbon-cutting ceremony for The Nicaragua National Football Stadium?

Context paragraphs:
Nicaragua National Football Stadium: The Nicaragua National Football Stadium (Estadio Nacional de Fútbol) in Managua, Nicaragua, is home to the Nicaragua national football team.  The official ribbon-cutting ceremony, attended by FIFA president Sepp Blatter, occurred on April 14, 2011.  The first official game was a men's national team match featuring Nicaragua and Panama in a FIFA World Cup 2014 qualifying match, on September 6, 2011.

Lucas Oil Stadium: Lucas Oil Stadium is a multi-purpose stadium in downtown Indianapolis, United States.  It replaced the RCA Dome as the home field of the NFL's Indianapolis Colts.  The stadium also hosted Super Bowl XLVI in 2012.  The stadium had its ribbon-cutting ceremony August 16, 2008, and then officially opened to the public eight days later on August 24, 2008.  The stadium was constructed to allow the removal of the RCA Dome and expansion of the Indiana Convention Center on its site.  The stadium is on the south side of South Street, the block south of the site of the former RCA Dome.  The stadium is often referred to as "The House That Manning Built", due to the success of the Indianapolis Colts during the tenure of Peyton Manning as their quarterback.

BOK Center: The BOK Center, or Bank of Oklahoma Center, is a 19,199-seat multi-purpose arena and a primary indoor sports and event venue in Tulsa, Oklahoma, United States.  Designed to accommodate arena football, hockey, basketball, concerts, and similar events, the facility was built at a cost of $178 million in public funds and $18 million in privately funded upgrades.  Ground was broken on August 31, 2005 and a ribbon-cutting ceremony involving Tulsa musicians Garth Brooks and Hanson took place on August 30, 2008.  The arena's schedule of concerts and other events began on August 31 with a community choir hosted by Sam Harris.

Gianni Infantino: Giovanni Vincenzo "Gianni" Infantino (] ; born 23 March 1970) is a football administrator and current FIFA president.  He holds dual nationality, Swiss and Italian.  He has been the general secretary of UEFA since 2009 and was elected president of FIFA during the 2016 FIFA Extraordinary Congress on 26 February 2016.

Nicaraguan Football Federation: The Nicaraguan Football Federation (Spanish: "Federación Nicaragüense de Fútbol" ) is the official governing body of football (soccer) in Nicaragua and is in charge of the Nicaragua national football team.

Kastles Stadium at The Wharf: The Kastles Stadium at The Wharf was a tennis stadium on the Southwest Waterfront in Washington, D.C. Built in 2011, the stadium was the home venue for the Washington Kastles tennis team.  The stadium was opened on June 14, 2011, with a ribbon-cutting ceremony attended by Billie Jean King, Ilana Kloss, District of Columbia mayor Vincent Gray, and others.  The Kastles opened their 2011 season on July 5 at the stadium playing against the Kansas City Explorers.

Sepp Blatter: Joseph "Sepp" Blatter (born 10 March 1936) is a Swiss football administrator who was the eighth president of FIFA ("Fédération Internationale de Football Association") from 1998 to 2015.  He is currently serving a six-year ban from participating in FIFA activities.

Rudel Calero: Rudel Alessandro Calero Nicaragua (born December 20, 1982) is a Nicaraguan footballer who currently plays for Real Estelí and the Nicaragua national football team.

Opening ceremony: An opening ceremony, grand opening, or ribbon-cutting ceremony marks the official opening of a newly-constructed location or the start of an event.  Opening ceremonies at large events such as the Olympic Games, FIFA World Cup, and the Rugby World Cup might have an opening ceremony that involves thousands of participants and is watched worldwide.

Nicaragua national football team: The Nicaragua national football team (Spanish: "Selección de fútbol de Nicaragua" ) is controlled by the Nicaraguan Football Federation.  Nicaragua achieved its first qualification to a major international competition in 2009, when it qualified for the 2009 CONCACAF Gold Cup after a 2–0 win over Guatemala in the 2009 UNCAF Nations Cup.

Supporting paragraphs: Nicaragua National Football Stadium Sepp Blatter
Answer: Swiss