Question: Juan Álvarez plays as a defender for a Mexican football club that was founded in what year?

Context paragraphs:
C.F. Monterrey: Club de Fútbol Monterrey is a Mexican football club from Monterrey, Nuevo León.  Founded on 28 June 1945, it is the oldest active team in the professional division from the northern part of Mexico, and currently play in the Liga MX.  The club is owned by FEMSA, Latin America's largest bottling company.  Its home games have been played in the Estadio BBVA Bancomer since 2015.

José Guadalupe Martínez: José Guadalupe Martínez Álvarez (born January 27, 1983) is a Mexican goalkeeper for the team Estudiantes Tecos, the Mexican professional football club associated with the Universidad Autónoma de Guadalajara AC.  Álvarez made his debut with the club Tecos UAG in 2002.

Garzas UAEH: Fútbol Club Universidad Autónoma del Estado de Hidalgo was Mexican football club that played in the Liga Premier in the Serie B.  The club was based in Pachuca, Hidalgo.  The club was an affiliate to the Mexican football club C.F. Pachuca and also represented the Universidad Autónoma del Estado de Hidalgo.

Murciélagos F.C.: Murciélagos Fútbol Club is Mexican football club that plays in the Ascenso MX.  The club is based in Los Mochis, Sinaloa.  From its beginnings the club had the aim to turn into a model for Mexican football.

Lobos BUAP: Club de Fútbol Lobos de la Benemérita Universidad Autónoma de Puebla is a Mexican football club based in Puebla, Mexico.  The club represents the Benemérita Universidad Autónoma de Puebla.  The club's history goes back to the early 1930s when the club was known as Preparatoria, formed exclusively by players that attended the university.  The club has played on and off since then.  It was not until the 1990s when the club made a serious comeback.  It has been playing in the lower level Mexican football divisions.  In 2003 the club was awarded a spot in the Primera A (now known as the Liga de Ascenso), a league where the club played until earning promotion in 2017 to the Liga MX Primera División.  The club makes its home in the Estadio Universitario BUAP.

Loros UdeC: Club de Fútbol Loros de la Universidad de Colima is Mexican football club that plays in the Liga Premier Serie A, the third tier division of Mexican football.  The club is based in Colima, Mexico.  The team was participating in the Ascenso MX during the 2016–17 season after earning promotion by winning the Torneo Clausura 2015 Championship over Cruz Azul Hidalgo and the Final de Ascenso against U.A. Estado de Mexico (winners of Apertura 2014).  They were initially going to get promoted during the 2015–2016 season, but they did not meet the stadium requirements.

Juan Álvarez (footballer): Juan Manuel Álvarez Hernández (born 1 July 1996) is a Mexican footballer who plays as a Defender for C.F. Monterrey.

Cruz Azul: Cruz Azul Fútbol Club, A.C, or simply Cruz Azul (] , "Blue Cross"), is a Mexican football club that plays in the top division of Mexican football, Liga MX.

Salvador Carmona: José Salvador Carmona Álvarez (born 22 August 1975 in Mexico City) is a former Mexican football defender who is currently banned for life from playing professional football affiliated to FIFA for failing two separate anti-doping tests.

Juan Carlos García (Mexican footballer): Juan Carlos García Álvarez (born March 13, 1985 in Mexico City) is a Mexican football defender.  He plays for Mérida F.C. in the Liga de Ascenso.

Supporting paragraphs: Juan Álvarez (footballer) C.F. Monterrey
Answer: 1945