Question: Of the Wall Street Tower and 55 Hudson Yards, which one will add 4,000,000 sq ft of space?
Context: 10 Hudson Yards is an office building that was completed in 2016 in Manhattan's West Side.  Located near Hell's Kitchen, Chelsea and the Penn Station area, the building is a part of the Hudson Yards urban renewal project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yard.  Coach, Inc. is the anchor tenant.  During planning, the tower was known as the South Tower or Tower C. Union Kitchen is a kitchen incubator located in the NoMa neighborhood of northeast Washington, D.C. The business was created in a 7,300 sq ft warehouse by Cullen Gilchrist and Jonas Singer when they became frustrated with the lack of commercial kitchen space available in Washington, D.C. Union Kitchen has over 4,500 sq ft of food prep and cooking areas, dry storage, frozen storage, and cold storage for use by over 50 different member food businesses.  The Kitchen also promotes local culture by housing several artist studios that provide in-house branding, illustrating, and web design services for the members. 55 Hudson Yards (also known as One Hudson Yards or One Hudson Boulevard) is a future tower just outside the Hudson Yards Redevelopment Project.  Located in Chelsea, Manhattan, it will add a combined 4000000 sqft of space to the Hudson Yards project, along with 50 Hudson Yards, even though the two buildings will be located outside of the redevelopment site itself. The Tree of Life is a large three-dimensional mural by artist Manav Gupta, located across the interior staircase of the Bharti Airtel office building in Gurgaon, India.  Covering approximately 5,000 sq ft of facade space and 10,000 sq ft of total painted surface, it is the tallest and largest indoor staircase mural.  While deploying site specific collaborative art practice of allowing more than 1000 employees of the office building, to participate in the experience of painting in the initial phase, the artist conceptualised the creation as a public art project. The ITC Grand Chola is a luxury hotel in Chennai, India.  It is the third largest hotel in India after Renaissance Mumbai Convention Centre Hotel and Grand Hyatt, both in Mumbai.  It is located in Guindy, opposite SPIC building and along the same row of buildings as Ashok Leyland "Towers".  The building, designed by Singapore-based SRSS Architects, is of mixed-use development with three separate wings and is themed after traditional Dravidian Architecture of the Chola Dynasty.  The hotel is the ninth "Luxury Collection" hotel of the Starwood Hotels group.  The hotel, built on over 1,600,000 sq ft, is dubbed the largest stand-alone hotel in the country built with an investment of 12,000 million and has the largest convention centre in the country built on 100,000 sq ft with a 30,000-sq ft pillar-less ballroom. 35 Hudson Yards (also Tower E or Equinox Tower) is a mixed-use building currently under construction in Manhattan's West Side and is slated to be composed of apartment units and a hotel.  Located near Hell's Kitchen, Chelsea, and the Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards. Ramanujan IT City is an information technology (IT) special economic zone (SEZ) situated in Chennai, India.  Named after the Indian Mathematician Srinivas Ramanujan, it is a joint venture of Tata Realty and Infrastructure Limited (TRIL), Indian Hotels Company Limited (IHCL) and Tamil Nadu Industrial Development Corporation (TIDCO).  Situated next to the Tidel Park, it is being developed in a land measuring 25 acres with two zones with a total built-up area of 5.7 million sq ft. including 4.5 million sq ft of office space. Wall Street Tower is a mixed-use building under development in the Financial District of Manhattan.  The building is being developed by Lightstone Group and was designed by British architect David Adjaye.  The building will be funded through the EB-5 visa program and through more traditional sources of capital. 50 Hudson Yards is a building being planned as part of the Hudson Yards Redevelopment Project in Hell's Kitchen, Manhattan.  The planned building is to be located to the north of 30 Hudson Yards, and on the east side of the Hudson Park and Boulevard, adjacent to 55 Hudson Yards.  It will total 2.9 million square feet of commercial space.  At the SW corner of 34th Street and 10th Avenue, it will replace the drive-thru McDonald's that had long-occupied the space. 500 West 30th Street (also known as Abington House) is a residential building in Chelsea, in Manhattan, New York City just outside the Hudson Yards Redevelopment Project.  There are 386 rental apartments at the building, located at the southwest corner of 30th Street and Tenth Avenue.  Robert A.M. Stern Architects designed the building, and The Related Companies developed the building.  There is about 7200 ft2 of rental space on the ground floor of the 33-story, 325 ft -tall building; the building also has a pre-fabricated red brick facade.  The building, the first to open in the area under the zoning of the Hudson Yards Redevelopment Project, has 78 permanent units.  It started leasing in April 2014, just two years after beginning construction in 2012.
Answer: 55 Hudson Yards