Question: What sport does Pieter Nys and Fortuna Sittard have in common?

full_context: Document 1: Philips Stadion: The Philips Stadion (] ) is a football stadium in Eindhoven, Netherlands, and it is the home of PSV (Philips Sport Vereniging), also known as PSV Eindhoven. With a capacity of 35,000, it is the third-largest football stadium in the country. Established as the Philips Sportpark, it was constructed as a sports field for Philips employees in 1910. The Philips Elftal played football matches from 1911 until 1913, when the team was succeeded by PSV. Since 1913, PSV has used the original ground as its home stadium.
Document 2: Aristote Nkaka: Aristote Nkaka (born 1 July 1996) is a Belgian footballer who plays as a defensive midfielder for Royal Excel Mouscron in the Belgian Pro League. Nkaka can also play as a centreback.
Document 3: Dries Mertens: Dries Mertens (] , born 6 May 1987) is a Belgian professional footballer who plays as a striker or winger for Italian club Napoli and the Belgium national team. Mertens signed for Napoli in 2013 prior to which he had stints in Belgium with Gent and Eendracht Aalst, and in the Netherlands with AGOVV Apeldoorn, Utrecht and PSV.
Document 4: Fortuna Sittard: Fortuna Sittard is a football club in Sittard, The Netherlands. The club currently plays its football in the 12,500 capacity Fortuna Sittard Stadion and features in the Dutch Eerste Divisie. The club was a merger of former clubs 'Fortuna 54' and 'Sittardia' who merged as the Fortuna Sittardia Combinatie on 1 July 1968.
Document 5: De Baandert: De Baandert was a multi-use stadium in Sittard-Geleen, Netherlands. It was used mostly for football matches and hosted the home matches of Fortuna Sittard. The stadium was able to hold 22,000 people. It was closed in 1999 when Fortuna Sittard Stadion opened.
Document 6: 1. FC Kaiserslautern: 1. Fußball-Club Kaiserslautern e. V., also known as 1. FCK, FCK or simply 1. FC Kaiserslautern (] ), is a sports club based in Kaiserslautern, Rhineland-Palatinate. It is internationally known, especially through its football division. On 2 June 1900, Germania 1896 and FG Kaiserslautern merged to create FC 1900. In 1909, the club went on to join FC Palatia (founded in 1901) and FC Bavaria (founded in 1902) to form FV 1900 Kaiserslautern. In 1929, they merged with SV Phönix to become FV Phönix-Kaiserslautern before finally taking on their current name three years later. As a founding member of the Bundesliga the FCK played from 1963 to 1996 through in the first league.
Document 7: Dries Saddiki: Dries Saddiki (born 9 August 1996) is a Dutch football player who plays for Fortuna Sittard in the Dutch Eerste Divisie.
Document 8: Pieter Nys: Pieter Nys (born 13 July 1989 in Hasselt) is a Belgian football player who plays as a defensive midfielder for MVV Maastricht in the Dutch Eerste Divisie. He formerly played for RC Genk, Fortuna Sittard and Sparta Rotterdam.
Document 9: Demy de Zeeuw: Demy Patrick René de Zeeuw (] ; born 26 May 1983) is a Dutch footballer who last played for NAC Breda and the Netherlands national football team. He is a defensive midfielder described as a good tackler and a gifted passer of the ball. He previously played for AGOVV, Go Ahead Eagles, AZ and AFC Ajax. While at AZ he was a key player in the squad that won the 2008–09 Dutch league, the club's first championship victory in 28 years. Following this success he transferred to Ajax, with whom he won the 2009–10 Dutch Cup, and the 2010–11 Dutch league title.
Document 10: Sjors Paridaans: Sjors Paridaans (born 23 January 1986 in Eindhoven) is a Dutch professional footballer who plays as a defender for Belgian side Berchem Sport. He formerly played for Fortuna Sittard, FC Eindhoven and FC Emmen.
Document 11: Fortuna Sittard Stadion: The Fortuna Sittard Stadion is a multi-use stadium on the Milaanstraat, Sittard, Netherlands. Currently used mostly for football matches, it is the home stadium of Fortuna Sittard. Built on the site of an industrial estate in 1999, it replaced Fortuna Sittard's former stadium, De Baandert. In 2013 they began to expand the stadion with an extra sports centrum next to it, a new hotel in the stadium and an whole new look.
Document 12: Patrick Nys: Patrick Nys (born 25 January 1969) is a Belgian former football goalkeeper who lasted played for F.C. Brussels. As of the summer of 2010, he is a goalkeeper coach with Antwerp FC.
Document 13: Nigel de Jong: Nigel de Jong (] ; born 30 November 1984) is a Dutch professional footballer who plays as a defensive midfielder for Turkish club Galatasaray and the Netherlands national team. He joined the Ajax youth academy as a youngster and worked his way through the ranks to make the first team at age 17. Two years later, in 2004, he made his international debut. Additionally, in 2010 he won a World Cup runners-up medal.
Document 14: Newcastle United F.C.: Newcastle United Football Club is an English professional association football club based in Newcastle upon Tyne, that currently plays in the Premier League, the top tier of English football. Newcastle United was founded in 1892 by the merger of Newcastle East End and Newcastle West End, and has played at its current home ground, St James' Park, ever since. The ground was developed into an all-seater stadium in the mid-1990s and now has a capacity of 52,354.
Document 15: Marnick Vermijl: Marnick Danny Vermijl ] (born 13 January 1992) is a Belgian footballer who currently plays as a right-back for English club Preston North End. Born in Peer, he began his career with nearby Bocholter VV, and joined the academy of Standard Liège in 2008 before being signed by English club Manchester United in 2010. He was unable to break into the Manchester United first-team and spent the 2013–14 season on loan to Dutch club NEC before moving to Sheffield Wednesday on a permanent deal in January 2015. Vermijl is also a Belgium youth international, having played at the under-17, under-18, under-19 and under-21 levels.
ground_truth: football