Question: What city in Pakistan is a global city?

Context paragraphs:
One McKinley Place: The One McKinley Place is a high-end residential condominium located across Pacific Plaza Towers in Bonifacio Global City, Philippines.  The 43-storey building, was completed in 2004 and rises to 149 metres (489 feet) from the ground to its architectural top.  It was the tallest single residential tower in Bonifacio Global City until the completion of The Infinity Fort Bonifacio in 2011.

Porto: Porto (] ; also known as Oporto in English) is the second-largest city in Portugal after Lisbon and one of the major urban areas of the Iberian Peninsula.  The urban area of Porto, which extends beyond the administrative limits of the city, has a population of 2.4 million in an area of 389 km2 , making it the second-largest urban area in Portugal.  It is recognized as a gamma+ level global city by the Globalization and World Cities (GaWC) Study Group, the only Portuguese city besides Lisbon to be recognised as a global city.

St. Luke's Medical Center - Global City: The St. Luke's Medical Center – Global City is a hospital at the Bonifacio Global City in Taguig, Metro Manila, Philippines.  It is the sister facility of the hospital of the same name in Quezon City.

Bonifacio Global City: Bonifacio Global City (also known as BGC, Global City, or The Fort) is a financial district in Metro Manila, Philippines.  It is located 11 km south-east of the center of Manila.  The district experienced commercial growth following the sale of military land by the Bases Conversion and Development Authority (BCDA).  The entire district used to be the part of the main Philippine Army camp.

Global city: A global city, also called world city or sometimes alpha city or world center, is a city generally considered to be an important node in the global economic system.  The concept comes from geography and urban studies, and the idea that globalization can be understood as largely created, facilitated, and enacted in strategic geographic locales according to a hierarchy of importance to the operation of the global system of finance and trade.

Federal Land Tower: The Federal Land Tower is a 66-storey and 318-meter high skyscraper, located in Bonifacio Global City, Taguig City, Metro Manila, It is the tallest building in Bonifacio Global City and also the tallest building in the Philippines since its completion earlier in 2017.

Fort Bonifacio Tunnel: The 1910 Fort Bonifacio War Memorial Tunnel is a tunnel that passes by the Bonifacio Global City district in Taguig and barangays in Makati, It is considered to be a historical site by the Bases Conversion Development Authority.  It is situated at the property of former military base Fort Bonifacio and now called Bonifacio Global City.  It has since become hidden underneath the streets that traverse C-5 and Kalayaan Avenue.

Market! Market!: Market!  Market!  is a real estate development owned by Ayala Land, a real estate subsidiary of Ayala Corporation and part of the Ayala Mall chain.  It is located at Mabini Avenue corner McKinley Parkway, Bonifacio Global City, Taguig City, Metro Manila, Philippines, part of the Bonifacio Global City a Central Business District.

The Infinity Fort Bonifacio: The Infinity Fort Bonifacio is a mixed-use skyscraper under construction in Bonifacio Global City, Taguig, Metro Manila, Philippines.  Although no exact height details was disclosed, it is found to have a height of 189.8 metres (622.70 feet), and has 48 floors above ground level.  It was proclaimed by its developer, Nuvoland Philippines Inc., that it will be the tallest structure in Bonifacio Global City by Dec. 2011 surpassing Pacific Plaza Towers after 10 years as a tallest building.

Karachi: Karachi (Urdu: ‎ ; ALA-LC: "Karācī" , ] ; Sindhi: ڪراچي‎ ) is the capital of the Pakistani province of Sindh.  It is the most populous city in Pakistan, sixth most populous city proper in the world and the 8th most populous metropolitan city in the world.  Ranked as a beta world city, the city is Pakistan's premier industrial and financial centre.  Karachi is also Pakistan's most cosmopolitan city.  Situated on the Arabian Sea, Karachi serves as a transport hub, and is home to two of Pakistan's two largest seaports, the Port of Karachi and Port Bin Qasim, as well as the busiest airport in Pakistan.

Supporting paragraphs: Karachi Global city
Answer: Karachi