Question: Teşvikiye Mosque and Abdi İpekçi Arena, are both located in which city, in Turkey?

Context paragraphs:
Nişantaşı: Nişantaşı is a quarter of the Şişli district on the European side of Istanbul, Turkey.  It comprises neighbourhoods like Teşvikiye, Maçka, Osmanbey and Pangaltı.  A popular shopping and residential district, it is one of Istanbul's most exclusive neighbourhoods.  The area includes fashion shops, department stores, cafés, pubs, restaurants and night clubs.  Abdi İpekçi Street, Turkey's most expensive shopping street in terms of lease prices, stretches from the neighbourhoods of Maçka and Teşvikiye to the center of Nişantaşı.

Galatasaray S.K. (men's basketball): Galatasaray S.K., for sponsorship reasons Galatasaray Odeabank, is a professional basketball team based in the city of Istanbul in Turkey.  It is a part of the Galatasaray Sports Club.  The team competes in the Turkish Basketball Super League and EuroCup.  Galatasaray plays its home matches in Abdi İpekçi Arena, which has a seating capacity for 12,270 spectators.  The team has been crowned Turkish national champions five times so far.

2011 European Judo Championships: The 2011 European Judo Championships are the 22nd edition of the European Judo Championships, organised by the European Judo Union, and were held at the Abdi İpekçi Arena in Istanbul, Turkey, from April 21 to April 24, 2011.

Abdi İpekçi Arena: Abdi İpekçi Arena, formerly known as Abdi İpekçi Sports Complex, is a multi-purpose indoor arena located in the Zeytinburnu district of Istanbul, Turkey, situated just outside the ancient city walls in Yedikule.  Designed in 1979 and opened in 1986 after several years of interrupted construction, it is named after the renowned Turkish journalist Abdi İpekçi.

Abdi İpekçi Street: Abdi İpekçi Street or Abdi İpekçi Avenue (Turkish: "Abdi İpekçi Caddesi" ) is one of the premier shopping streets of İstanbul, Turkey, located in the Şişli district.  It runs along the Maçka and Teşvikiye neighborhoods, extending from Bayıldım Caddesi/Maçka Caddesi to Vali Konağı Caddesi in the Nişantaşı quarter, crossing Mim Kemal Öke Caddesi, Bronz Sokak, Atiye Sokak, Teşvikiye Bostanı Sokak, Eytam Caddesi, Altın Sokak and Profesör Doktor Feyzi Feyzioğlu Sokak on its length of around 700 m in generally northern direction.

1994–95 FIBA European Cup: The 1994–95 FIBA European Cup season occurred between September 6, 1994, and March 14, 1995.  The final was held at Abdi İpekçi Arena, Istanbul, Turkey and Benetton Treviso defeated Taugrés in front of 6,000 spectators.

Eurovision Song Contest 2004: The Eurovision Song Contest 2004 was the 49th Eurovision Song Contest and it was held in the Abdi İpekçi Arena in Istanbul, Turkey.

Teşvikiye Mosque: The Teşvikiye Mosque is a neo-baroque structure located in the Teşvikiye neighbourhood of Şişli district in Istanbul, Turkey.

1991–92 FIBA European League: The 1991–92 FIBA European League, also shortened to 1991–92 FIBA EuroLeague, was the 35th installment of the European top-tier level professional club competition for basketball clubs (now called EuroLeague).  The competition's Final Four was held at the Abdi İpekçi Arena in Istanbul, Turkey.  It was won by Partizan, who defeated Joventut Badalona, by a result of 71–70.

Ülker G.S.K.: Ülker Gençlik ve Spor Kulübü, commonly known as Ülker or Ülkerspor, is a defunct professional basketball club that was based in İstanbul, Turkey.  The club competed in the Turkish Basketball League.  The club played its home games at the Abdi İpekçi Arena.

Supporting paragraphs: Teşvikiye Mosque Abdi İpekçi Arena
Answer: Istanbul