Question: How many caps for Italy were earned by the manager of Inter Milan when they reached the quarter-finals of the UEFA Cup after comebacks against Rapid Wien and Aston Villa?

Context paragraphs:
1996 UEFA Cup Winners' Cup Final: The 1996 UEFA Cup Winners' Cup Final was a football match contested between Paris Saint-Germain of France and Rapid Wien of Austria.  It was the final match of the 1995–96 UEFA Cup Winners' Cup and the 36th Cup Winners' Cup Final.  The final was held at King Baudouin Stadium in Brussels on 8 May 1996.  Paris Saint-Germain won the match 1–0, thanks to a free kick from Bruno N'Gotty.

Gérard Houllier: Gérard Houllier, OBE (] ; born 3 September 1947) is a French football manager and former player.  His past clubs include Paris Saint-Germain, Lens and Liverpool, with whom he won the FA Cup, League Cup and UEFA Cup in 2001.  He then guided Olympique Lyonnais to two French titles, before announcing his resignation on 25 May 2007.  He became manager of Aston Villa in September 2010.  He also coached the France national team between 1992 and 1993.  He assisted Aimé Jacquet in the FIFA World Cup 1998, was part of UEFA's and FIFA's Technical Committee in the 2002 and 2006 World Cup finals, and technical director for the French Football Federation during the 2010 finals.  In June 2011, he stepped down from club coaching, leaving his managerial role at Aston Villa, following frequent hospitalisation over heart problems.

1997–98 Serie A: The 1997–98 Serie A saw Juventus win their 25th national title, with Inter Milan placed second and qualified to the Champions League 1998-1999.  Udinese, Roma, Fiorentina, Parma qualified to the UEFA Cup 1998-1999.  Lazio qualified for the UEFA Cup Winners Cup courtesy of winning the Coppa Italia.  Bologna and Sampdoria qualified to 1998 UEFA Intertoto Cup.  Brescia, Atalanta, Lecce and Napoli were relegated to Serie B.

1990–91 Inter Milan season: Inter was thought to be a favourite for the Serie A title, having - between others - three world champions in their squad.  Well placed in the league, the side also reached the quarter-finals of the UEFA Cup after comebacks against Rapid Wien and Aston Villa.  Trapattoni's team managed to progress to the final, beating also Atalanta and Sporting Lisboa.  Lost hopes for the "Scudetto", due to losses from the Genoa sides in May, Inter saved the season by winning the UEFA cup.  The triumph was over fellow Italian side Roma, 2–1 on aggregate.

Giovanni Trapattoni: Giovanni Trapattoni (] ; born 17 March 1939), sometimes popularly known as "Trap" or "Il Trap", is an Italian football manager and former footballer, considered the most successful club coach in the history of Serie A.  A former defensive midfielder, as a player he spent almost his entire club career with A.C. Milan, where he won two Serie A league titles (1961–62 and 1967–68), and two European Cups, in 1962–63 and 1968–69.  Internationally, he played for Italy, earning 17 caps and participating in the 1962 FIFA World Cup in Chile.

Aston Villa Under-23s and Academy: The Aston Villa Under-23, formerly Aston Villa Under-21 and Aston Villa Reserves, are the most senior youth development team of Aston Villa and compete in Premier League 2 (Division 2) of the Professional Development League and the Premier League International Cup in the 2016–17 season.  The team were part of the FA Premier Reserve League since its foundation in 1999 and were winners of the 2011-12 Premier Reserve League South title, the last in that format.  The team plays its home games at Villa Park and Bescot Stadium (home of Walsall F.C.).  Aston Villa also have an academy side that competes in the Under-18 division of the Professional Development League and the FA Youth Cup annually.

Earl Barrett: Earl Delisser Barrett (born 28 April 1967) is an English former footballer who played in the Football League and Premier League for Manchester City, Chester City, Oldham Athletic, Aston Villa, Everton, Sheffield United and Sheffield Wednesday.  He played mainly at right back though could also adapt to a central defensive role.  He also gained three England caps while playing at Oldham and Aston Villa.  The £1.7m Aston Villa paid for him in February 1992 remains, as of 2014, Oldham Athletic's record transfer receipt.

List of Aston Villa F.C. seasons: This is a list of seasons played by Aston Villa Football Club in English and European football, from 1879 (the year of the club's first FA Cup entry) to the most recent completed season.  Aston Villa football club was founded in March, 1874, by members of the Villa Cross Wesleyan Chapel in Aston.  Throughout the 1870s Aston Villa played a small amount of games.  At least one game, against Aston Brook St Mary's was played with one half under Rugby rules and the other under football rules.  In the 1880s the game became more formalised and in 1888, William McGregor formed the Football League with 11 other clubs.

Luis Suárez (footballer, born 1935): Luis Suárez Miramontes (] ; born 2 May 1935), also known by the diminutive Luisito, is a Spanish former footballer and manager.  He played as a midfielder for Deportivo de La Coruña, CD España Industrial, FC Barcelona, Inter Milan, Sampdoria and Spain.  Suárez is regarded as one of Spain's greatest players; he was noted for his elegant, fluid, graceful style of play.  Nicknamed "El Arquitecto" (The Architect) he was noted for his perceptive passing and explosive shot and in 1960 he became the only Spanish-born player to be voted Ballon d'Or.  In 1964 he helped Spain win the European Championship.  Suarez originally achieved prominence as a creative inside forward or attacking midfielder for the great Barcelona team of the 1950s before he joined Inter Milan where he reached his prime as deep lying playmaker for the legendary "Grande Inter" team of the 1960s.  He played a pivotal role in the success Herrera's Inter Milan side, and was one of the primary creative forces in the squad, due to his ball skills, vision, and passing range.  He retired as a player in 1973, after three seasons at Sampdoria.

FK Austria Wien: Fußballklub Austria Wien (] ; known in English as Austria Vienna, and usually shortened to Austria in German-speaking countries), is an Austrian association football club from the capital city of Vienna.  It has won the second most Austrian Bundesliga titles - counting 24 since the introduction of the Austrian league in the season 1911-12.  Along with its cross-city rival Rapid Wien, it is one of the only sides that have never been relegated from the Austrian top flight.  With 27 victories in the Austrian Cup and six in the Austrian Supercup, Austria Wien is also the most successful club in each of those tournaments, and has won the most national titles of any Austrian football club.  The club reached the UEFA Cup Winners' Cup final in 1978, and the semi-finals of the European Cup the season after.  The club plays at the Franz Horr Stadium, known as the Generali Arena since a 2010 naming rights deal with an Italian insurance company.

Supporting paragraphs: 1990–91 Inter Milan season Giovanni Trapattoni
Answer: 17