Question: What tournament did Giovanni Van Bronckhorst lead Feyenoord to in his third season as manager?

Context paragraphs:
2016–17 Feyenoord season: The 2016–17 season was Feyenoord's 109th season of play, it marked its 61st season in the Eredivisie and its 95th consecutive season in the top flight of Dutch football.  It was the second season with manager Giovanni van Bronckhorst, a former player who played seven seasons for Feyenoord and who played 106 times for Dutch national team.  Feyenoord entered the KNVB Cup in the first round and the Europa League in the group stage.

2012–13 Feyenoord season: The 2012–13 season was Feyenoord's 105th season of play, it was their 57th season in the Eredivisie and its 91st consecutive season in the highest Dutch football division.  The club ended its league campaign in third place, being undefeated at home, and reached the quarter-finals of the KNVB Cup.  Their European campaign ended after four matches, two each in the UEFA Champions League and UEFA Europa League.  It was the club's second season under manager Ronald Koeman.

2013–14 Feyenoord season: The 2013–14 season was Feyenoord's 106th season of play, it marked its 58th season in the Eredivisie and its 92nd consecutive season in the top flight of Dutch football.  They ended their league campaign as runners-up.  They entered the KNVB Cup in the second round and reached the quarter-final.  Their Europa League appearance consisted of the play-off round.  It was the third straight season with manager Ronald Koeman, who did not renew his contract at the conclusion of the season.

2012–13 Stevenage F.C. season: The 2012–13 season was Stevenage F.C.'s third season in the Football League, where the club competed in League One.  This article shows statistics of the club's players in the season, and also lists all matches that the club played during the season.  Their sixth place finish and subsequent play-off semi-final defeat during the 2011–12 campaign means it was Stevenage's second season of playing in League One, having only spent two years as a Football League club.  The season also marked the third season that the club played under its new name – Stevenage Football Club, dropping 'Borough' from its title as of 1 June 2010.  It was manager Gary Smith's first start to a season as Stevenage manager, having been appointed in January 2012.  However, Smith was sacked in March 2013 following a run of 14 defeats in 18 games.  His successor was Graham Westley, returning for his third spell in-charge of Stevenage, having previously managed the club for three years from 2003 to 2006, and then four years during his second-spell from 2008 to 2012.

2011–12 Feyenoord season: The 2011–12 season was Feyenoord's 104th season of play, it was their 56th season in the Eredivisie and its 90th consecutive season in the highest Dutch football division.  They ended their league campaign in second place, after winning ten of the last eleven games of the season.  They reached the third round of the KNVB Cup.  It was the first season with Ronald Koeman, who signed as manager of Feyenoord after former manager Mario Been resigned on 13 July 2011 due to a lack of trust from the squad.

Giovanni van Bronckhorst: Giovanni Christiaan van Bronckhorst (] ; born 5 February 1975), also known by his nickname Gio, is a retired Dutch footballer and the current manager of Feyenoord.  Formerly a midfielder, he moved to left-back later in his career.

2017–18 Feyenoord season: The 2017–18 season was Feyenoord's 110th season of play, it marked its 62st season in the Eredivisie and its 96th consecutive season in the top flight of Dutch football.  It was the third season with manager Giovanni van Bronckhorst, a former player who played seven seasons for Feyenoord and who played 106 times for Dutch national team.  Feyenoord entered the KNVB Cup in the first round and the Champions League in the group stage.

2015–16 Feyenoord season: The 2015–16 season was Feyenoord's 108th season of play, it marked its 60th season in the Eredivisie and its 94th consecutive season in the top flight of Dutch football.  It was the first season with manager Giovanni van Bronckhorst, a former player who played seven seasons for Feyenoord and who played 106 times for Dutch national team.  The club started the season relatively well alternating between the second and third place until the halfway point of the season.  They then hit a seven-game losing streak among a nine-game stretch without a win and dropped to seventh place.  They followed this up with a six-game winning streak to get back to the third position for the final stretch of the season.  They ended the season third in the league.  Feyenoord entered the KNVB Cup in the second round.  They started their campaign by beating both finalist of the 2013–14 edition.  They were coupled to past cup winners in all their cup matches and beat FC Utrecht 2–1 in the final.  The cup win qualified them to the group stage of the 2016–17 UEFA Europa League.

2014–15 Feyenoord season: The 2014–15 season was Feyenoord's 107th season of play, it marked its 59th season in the Eredivisie and its 93rd consecutive season in the top flight of Dutch football.  It was first season with manager Fred Rutten.  The club was busy during the summer transfer window, selling or releasing of 12 players and signing 13 new players.  Feyenoord had a bad start of the season, dropping to 15th place in the league after losing three and drawing two of its first six league games.  They played only the second round of the KNVB Cup; they were knocked out by Go Ahead Eagles.  The club also lasted a single round in the Champions League; the third qualifying round consisted of two losses to Beşiktaş.  They reached the Europa League group stage by beating FC Zorya Luhansk 4–3 at home after an away draw.  The team improved after this early showing.  A five-game winning streak catapulted them to third place in the Eredivisie by mid fall.  They also reached the knockout phase of the Europa League by beating Standard Liège, HNK Rijeka and title holders Sevilla in the group phase.  They went into the winter break placed third in the league.

2009–10 Feyenoord season: The 2009–10 season was the first season under new coach Mario Been.  The former Feyenoord striker was manager of N.E.C., and has been assistant-coach of Bert van Marwijk at Feyenoord in the past.  Feyenoord welcomed five new players: Dani Fernández came over for free from N.E.C., Sekou Cissé signed a four-year deal after his transfer from Roda JC, Kamohelo Mokotjo came over from Supersport FC and loan agreements were made with Borac Čačak for Aleksandar Ignjatović, and with Nantes for Stefan Babović.

Supporting paragraphs: 2017–18 Feyenoord season Giovanni van Bronckhorst
Answer: KNVB Cup