Question: 55 Hudson Yards and 1221 Avenue of the Americas are both locataed in which New York City?

Context paragraphs:
55 Hudson Yards: 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.

3 Hudson Boulevard: 3 Hudson Boulevard, previously tentatively known as the GiraSole, is a supertall skyscraper under construction in Manhattan's Hudson Yards and Hell's Kitchen neighborhoods along the Hudson Park and Boulevard in New York City.  Its developer is Joseph Moinian.

Vessel (structure): Vessel is a public structure and landmark that is under construction as part of the Hudson Yards redevelopment project in the Manhattan borough of New York City.  The elaborate honeycomb-like structure is designed to rise 16 stories and consist of 154 flights of stairs, 2,500 steps, and 80 landings.  When complete, visitors would be able to climb the installation.  Designed by the British architect Thomas Heatherwick, "Vessel" is intended to be the main feature of the 5 acre Hudson Yards Public Square once the structure is completed in 2018 at a cost of $150 million to $200 million.

Chelsea, Manhattan: Chelsea is a neighborhood on the West Side of the borough of Manhattan in New York City.  The district's boundaries are roughly 14th Street to the south and the Hudson River and West Street to the west, with the northern boundary variously described as 30th Street or 34th Street, and the eastern boundary as either Sixth Avenue or Fifth Avenue.  To the north of Chelsea is the neighborhood of Hell's Kitchen, as well as the Hudson Yards; to the northeast is the Garment District; to the east are NoMad and the Flatiron District; to the southwest is the Meatpacking District; and to the south and southeast are the West Village and the remainder of Greenwich Village.

7 Subway Extension: The 7 Subway Extension is a subway extension of the New York City Subway's IRT Flushing Line.  The extension stretches 1 mi southwest from its previous terminus at Times Square, at Seventh Avenue and 41st Street, to one new station at 34th Street and Eleventh Avenue.  A second station at 10th Avenue and 41st Street was dropped from the plans in October 2007.  The entirety of the extension is located within the New York City borough of Manhattan and is served by the 7 local and <7> express services.  The extension, a key part of the Hudson Yards Redevelopment Project, is expected to bring business and entertainment into the area, as well as aid redevelopment of nearby Chelsea and Hell's Kitchen, located around the Long Island Rail Road's West Side Yard.  The extension also serves the nearby Jacob K. Javits Convention Center.

1221 Avenue of the Americas: 1221 Avenue of the Americas (formerly also known as McGraw-Hill Building) is a skyscraper located at 1221 Sixth Avenue, in Manhattan, New York City.

50 Hudson Yards: 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: 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.

Richard Tenguerian: Richard Tenguerian (Armenian: Տիգրան Թընկըրեան ; born, August 3, 1955) is an architectural model maker of Armenian descent.  Some of his notable physical models include the Kingdom Center in Riyadh (1998), Yankee Stadium in New York (2006), The Sail @ Marina Bay in Singapore (2007), and Comcast Center in Philadelphia (2008).  More recently, he has made architectural models for the New Tappan Zee Bridge in New York (2013), CBS Sixty Minutes, and the Hudson Yards Redevelopment Project in New York (2014).  He is the founding principal of Tenguerian Models and resides in New York City.

Hudson Yards, Manhattan: Hudson Yards is a large-scale redevelopment program that is planned, funded and constructed under a set of agreements among the City of New York, the State of New York, and the Metropolitan Transportation Authority, with the aim of expanding the Midtown Manhattan Business District westward to the Hudson River.  The program includes a major rezoning of the Far West Side, an extension of the New York City Subway's trains to a new subway station at 34th Street and 11th Avenue, a renovation and expansion of the Jacob K. Javits Convention Center, and a financing plan to fund the various components.

Supporting paragraphs: 55 Hudson Yards 1221 Avenue of the Americas
Answer: Manhattan