Question: What is the ethnicity of the football player who played for both Watford Football Club and Tottenham Hotspur?
Context: The 2002–03 season marked Watford Football Club's third consecutive season in the Football League First Division, following relegation from the Premier League in the 1999–2000 season.  The club was managed by its former reserve team manager Ray Lewington, following the dismissal of Gianluca Vialli at the end of 2001–02.  The club finished 13th in the First Division, reached the semi-final of the FA Cup, and were eliminated in the first round of the League Cup.  Watford were operating under severe financial constraints following the collapse of ITV Digital, and at the end of the season were forced to offload several first team players, including Tommy Smith, Gifton Noel-Williams, Stephen Glass and the club's record signing at the time Allan Nielsen. Watford Football Club is an English football club from Watford, Hertfordshire.  Formed as Watford Rovers in 1881, the club entered the FA Cup for the first time in 1886.  In the same year, they also entered the county-wide Herts Senior Cup, reaching the final six times over the next ten years.  Watford Rovers became West Hertfordshire in 1893, and joined the Southern League for the 1896–97 season.  The team started to change from one composed entirely of amateurs to one including paid professionals.  In 1898, West Hertfordshire merged with Watford St Mary's to form Watford Football Club. Allan Nielsen (born 13 March 1971) is a Danish former professional football player whose most notable period of football was four years at English Premier League club Tottenham Hotspur with whom he won the 1999 League Cup, scoring the winning goal. Watford Football Club is an English association football club based in Watford, Hertfordshire.  Formed as Watford Rovers in 1881, and renamed West Hertfordshire in 1893, the team joined the Southern League in 1896.  West Hertfordshire merged with local rivals Watford St. Mary's for the start of the 1898–99 season, adopting the club's present name.  Between 1898 and 1920, Watford competed in the Southern League, winning the championship in 1914–15.  The Southern League was suspended for the next four seasons due to the First World War.  On the league's resumption in 1919–20, Watford finished as runners up on goal average.  At the start of 1920–21, Watford joined the Football League Third Division, and transferred to the Third Division South when the league was reorganised the following season.  They have played in the Football League ever since, with the exception of 1939–1946, when competitive football was suspended due to the Second World War, and the 1999–2000 and 2006–07 seasons, when they competed in the Premier League.  In addition to the latter two seasons, the club also competed in the top division of English football between 1982 and 1988, achieving their highest league placing of second in the 1982–83 season. Watford Football Club (also known simply as Watford, or as The Hornets) is an English football club from Watford, Hertfordshire.  The team competed in the Football League Championship in 2011–12, their fifth consecutive season in the second tier of English football since their relegation from the Premier League in 2006–07.  The 2011–12 season consisted of pre-season friendlies in July 2011, followed by competitive matches in the Football League, FA Cup and Football League Cup between August 2011 and April 2012.  Assistant manager Sean Dyche became manager in July 2011, following the departure of Malky Mackay.  The club's captain for the season was central midfielder John Eustace.  Watford's chairman was Graham Taylor, who previously took Watford from the Fourth Division to the First Division as manager. Watford Football Club (also known simply as Watford, or as The Hornets) is an English association football club from the town of Watford, in Hertfordshire.  The 2010–11 English football season officially began on 1 July 2010, and ended on 30 June 2011, although Watford only played competitive fixtures between August and May.  The team competed in the Football League Championship for the fourth consecutive season, following relegation from the Premier League in 2006–07.  The club chairman was Graham Taylor, who as a manager took Watford from the Fourth Division to the top division of English football.  Their manager was Malky Mackay, and their captain was central midfielder John Eustace. Watford Football Club are an English football club, from Watford, Hertfordshire.  Founded in 1881 as Watford Rovers, the club has competed in the Football League since 1920, with the exceptions of 1999–2000, 2006–07, 2015–16 and 2016–17, when it competed in the Premier League.  First introduced by the "Watford Observer" in the 1972–73 season, the Watford F.C. Player of the Season award is voted for annually by supporters of the club.  It recognises the best overall performance by an individual player through the season.  Each year the winner is presented with the "Watford Observer Trophy" at the club's end-of-season awards dinner. Tottenham Hotspur Ladies F.C. is an English women's football club affiliated with Tottenham Hotspur F.C..  The club is set to compete in the FA WSL 2 for the 2017–18 season.  The club currently play at Cheshunt F.C..  Tottenham Hotspur Ladies F.C. was founded in 1985, under the name Broxbourne Ladies.  The first team have won twelve trophies, the most recent being the overall FA Women's Premier League in the 2016-17 season. The History of Tottenham Hotspur F.C., an English football club based in Tottenham, London, began in 1882.  The club in was formed as Hotspur F.C. by a group of schoolboys, and it was renamed Tottenham Hotspur F.C. in 1884.  The club became a professional football club in 1895, and won the FA Cup in 1901 before they joined the Football League, becoming the only non-League club to achieve the feat since the formation of the Football League.  Since then, Tottenham have won the FA Cup a further seven times, the Football League twice, the Football League Cup four times, the UEFA Cup twice and also the UEFA Cup Winners' Cup.  The Cup Winners' Cup victory in 1963 made Tottenham the first English team to win a UEFA competition.  In 1960–61, they were the first team to complete The Double in the 20th century. Watford Football Club is a professional football club based in Watford, Hertfordshire, England, that plays in the Premier League, the highest level in the English football league system.  Founded in 1881 as Watford Rovers, the club entered the FA Cup for the first time in 1886, and the Southern League a decade later.  After finishing the 1914–15 season as Southern League champions under the management of Harry Kent, Watford joined the Football League in 1920.  The club played at several grounds in its early history, before moving to a permanent location at Vicarage Road in 1922, where it remains to this day.  Watford spent most of the following half century in the lower divisions of The Football League, changing colours and crest on multiple occasions.
Answer: Danish