You will be given a definition of a task first, then some input of the task.
In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: Football Club Groningen is a Dutch professional football club based in Groningen. The club plays in the Eredivisie, the highest football league of the Netherlands., AFAS Stadion, formerly called DSB Stadion is a stadium in Alkmaar, Netherlands. It is used for football matches and is the home stadium of AZ. The stadium is able to hold 17,023 people and it officially opened on August 4, 2006 with a friendly against Arsenal. AZ lost the match 30, with Gilberto Silva scoring the stadium's first ever goal. The first Eredivisie game against NAC Breda was won 81 by the home team with the German midfielder Simon Cziommer scoring a hat-trick., Alkmaar Zaanstreek, better known as AZ Alkmaar or simply AZ, is a Dutch professional football club from Alkmaar and the Zaanstreek. The club plays in the Eredivisie, the highest professional football league in the Netherlands, and hosts home games at the AFAS Stadion., Nick van der Velden ( born December 16 , 1981 in Amsterdam ) is a Dutch footballer who currently plays for Willem II ( football club ) in the Dutch Eredivisie . He previously played for FC Dordrecht , RKC Waalwijk , AZ Alkmaar , NEC and FC Groningen ., The Eredivisie (""Honorary Division"") is the highest echelon of professional football in the Netherlands. The league was founded in 1956, two years after the start of professional football in the Netherlands. At the end of the 20152016 season it was ranked the 13th best league in Europe by UEFA., Subject: nick van der velden, Relation: position_played_on_team_/_speciality, Options: (A) end (B) midfielder
Output:
midfielder