Question: The largest bank by assets in Pakistan formed a Pakistani football club based in which city ?

Context paragraphs:
HBL F.C.: HBL F.C. are a Pakistani football club based in Karachi who play in the Pakistan Premier League.  The club was formed in 1975 by the Habib Bank, hence the nickname, "the Bankers".

PEL F.C.: PEL F.C. is a Pakistani football club based in Lahore that competes in Pakistan Premier League.  It is affiliated with Pakistani appliance and electronics company Pak Elektron Limited.

K-Electric F.C.: K-Electric Football Club, commonly referred to as K-Electric F.C., or simply known as KE, is a Pakistani football club located in Karachi, Sindh, that plays in the Pakistan Premier League.  The club's home stadium is Peoples Football Stadium and is affiliated with K-Electric.  K-Electric, KPT FC and Karachi United are among the major football clubs from Karachi.  It is probably the best club in Pakistan, but as the saying goes, one eyed is the king in the land of blinds.  They competed in the 2016 PFF Cup.

ZTBL F.C.: ZTBL F.C. is a Pakistani football club based in Islamabad representing the Zarai Taraqiati Bank Limited formerly known as Agriculture Development Bank of Pakistan.

Baloch F.C.: Baloch F.C is a Pakistani football club based in the city of Nushki on the border of Pakistan and Afghanistan.  It won the 2008–09 PFF League to qualify for Pakistan Premier League 2009.

Mehraj Mattoo: Mehraj Mattoo (महराज मट्टू ) is a British investment banker, economist and author; currently a Senior Fellow at Harvard University.  He is the Co-founder and CEO of Commonwealth Asset Management.  According to the UK and Cayman Islands company records, Commonwealth Asset Management is majority owned by NR Investments, the investment vehicle of the Rothschild Family.  Before co-founding Commonwealth, Dr. Mattoo was Global Head of Asset Management at Commerzbank AG, leading one of the largest hedge fund and private equity groups globally (Investhedge 2009; The Billion Dollar Club).  Prior to Commerzbank, Dr. Mattoo was the Managing Director of Dresdner Kleinwort Wasserstein, the investment banking arm of Dresdner Bank AG, the second largest bank in Germany.  In the mid-1990s, Dr. Mattoo co-founded the first fund derivatives group in the City at BNP Paribas, the largest French/global bank by assets.  He is widely credited for pioneering the use of structured products on alternative investments, especially hedge funds, that helped attract institutional assets to the hedge fund industry and contributed to its explosive growth over the following decade.  In the early 1990s, Dr. Mattoo established and led the Structured Products business at NatWest Markets, the investment banking arm of Britain's largest bank, National Westminster Bank, now part of RBS Group and led an educational effort aimed at promoting responsible use of derivatives by corporations and institutional investors.

Pakistan Railways F.C.: Pakistan Railways FC are a Pakistani football club from Lahore who play in the Pakistan Premier League and play at the Railway Stadium.  Nicknamed the Railwaymen, they are one of the oldest football clubs in Pakistan and were created by the railway workers on the Pakistan Railway.

HBL Pakistan: HBL (Urdu: حَبيب بينك‎ ) (formerly Habib Bank Limited) now referred to as HBL Pakistan is a Karachi based multinational bank.  It is the largest bank by assets in Pakistan.

PIA F.C.: PIA F.C. are a Pakistani football club who play in the Pakistan Premier League.  Founded in 1958 and based in Karachi, the Pakistan International Airlines affiliated team are the most successful Pakistani football club, winning the national championship a record 9 times.  They competed in the 2016 PFF Cup.

Pakistan Television F.C.: PTV F.C. is a Pakistani football club which plays in the Pakistan Premier League, representing PTV (a Pakistani network of television channels).  The club is based in Islamabad.  They were promoted to the PPL in 2006/7, when they won the Pakistan Football Federation League.

Supporting paragraphs: HBL F.C. HBL Pakistan
Answer: Karachi