Question: What city is the only graduate student employee union in?

Context paragraphs:
Temple University Graduate Students Association: The Temple University Graduate Students Association (TUGSA) is a graduate employee union at Temple University.  The union won recognition on September 26, 2001 when the Temple board of trustees voted to recognize their union.  The union ratified its first contract on May 18, 2002 and the Trustees voted to ratify it on May 14.  While graduate employees had formed unions in other states since 1970, the TUGSA contract marked the first time that graduate employees in Pennsylvania bargained a contract with their employer.  TUGSA is affiliated with the American Federation of Teachers/AFL-CIO.

Center for Place, Culture and Politics: The Center for Place, Culture and Politics, established in 2000, is an interdisciplinary center providing an intellectual forum for the discussion of a wide range of vital contemporary topics and it is located at CUNY Graduate Center.  As the name suggests, most of the pressing political and economic issues of today occur at the nexus of place and culture.  At the beginning of the 21st century, questions of space and place have come to play a crucial role in politics and public culture.  Each academic year, a group of faculty and graduate student fellows explore a specific theme at the Center.  At a weekly seminar, participants read relevant materials and fellows present their own work and explore the work of others related to the theme.  The Center also hosts prominent national and international scholars and activists who have done significant work related to the theme.  These Distinguished Lecturers present a public lecture and meet with the fellows at their weekly seminar, and also host conferences.  Previous Distinguished Lecturers and conference participants have included Gayatri Spivak, Derek Gregory, Daniel Ellsberg, Eyal Weizman, Vandana Shiva, Nancy Fraser, Gar Alperowitz, Naomi Klein, and many others.  In addition, the Center sponsors research working groups, including an ongoing group on The Right to the City.  The Center organizes edited volumes, and hold book celebrations for authors as well as other scholarly events.  Each academic year the Center appoints eight faculty fellows and five graduate student fellows from throughout the City University of New York.  Fellows are drawn from doctoral programs throughout the social sciences, humanities, and sciences.

Coalition of Graduate Employee Unions: The Coalition of Graduate Employee Unions consists of unions representing graduate employees (also known as academic student employees or ASEs) at universities in Canada and the United States.  The coalition formed in 1992 and each year it organizes a yearly conference at which representatives from graduate employee unions come together to teach and learn from each other about organizing, negotiating contracts, tactics, and mobilization of members.  In past conferences, the delegates spent part of one of the days on the picket line in solidarity with a group of striking workers in the city hosting the conference, but this has not occurred in recent years.  In the period between conferences CGEU provides a forum for graduate employee unions to share information with each other, and maintains a website with information about graduate employee organizing.

At What Cost?, Cornell: At What Cost was a graduate student group formed at Cornell University in August 2002 to oppose a graduate student unionization drive run by an organization called CASE/UAW that was affiliated with the United Auto Workers.  The name At What Cost?  has also been used by other similar but unrelated groups.  The unionization vote was held on October 23 and 24, 2002, and the union was rejected.  At What Cost?  was considered instrumental in the unusually large 90% turnout for the vote and in the surprising 2-to-1 defeat of the unionization proposal.  There had been no prior instance in American graduate student unionization history where a unionization proposal was defeated by a vote.

Graduate Employees and Students Organization: Local 33–UNITE HERE (formerly the Graduate Employees and Students Organization (GESO–UNITE HERE)) is a certified union of graduate student teachers at Yale University in New Haven, Connecticut.  If recognized, Local 33–UNITE HERE would become the second graduate employee union at a private American university, following the Graduate Student Organizing Committee (GSOC-UAW 2110) at New York University.

New York University: New York University (NYU) is a private nonprofit research university based in New York City.  Founded in 1831, NYU's main campus is centered in Manhattan, located with its core in Greenwich Village, and campuses based throughout New York City.

National Distribution Union: The National Distribution Union (NDU) was a national trade union in New Zealand.  It was formed in 1986 as the "Northern Distribution Union" by the merger of The Northern Drivers Union, The Northern Stores and Warehouse Union, The Auckland and Gisborne Shop Employee Union, and The Northern Butchers and Grocers Union.  A further merging of seven South Island unions led to the renaming to the current National Distribution Union.

Graduate student journal: A graduate student journal is an academic journal which is run by graduate students.  These students are involved in the production, editing and peer review processes for the journal.  On the whole, graduate student journals have a poor reputation, and limited funding and training can result in poor production values and editorial practices.  Despite this, some graduate student journals, such as the "Harvard Educational Review", are highly regarded, and peer review can be performed to a higher standard in student-run journals than in more mainstream journals.

University of Melbourne Student Union: The student union is one of two student organisations at the University of Melbourne, Australia.  The University of Melbourne Student Union (UMSU), incorporated as University of Melbourne Student Union, Inc. (UMSUi) provides representation for students.  There is a separate company, wholly owned by the University; Melbourne University Student Union Limited (MUSUL), which provides services to the two student organisations - UMSU and the Graduate Student Association (GSA).  MUSUL is a company limited by guarantee and governed by a board of directors which comprises only three students.  It is not a student organisation.  UMSU was incorporated on 17 November 2005, following approval by the Council of the University of Melbourne in October of that year.  Its first elections were held in October 2005 under the transitional clauses of the constitution.

Graduate student employee unionization: Graduate student employee unionization, or academic student employee unionization, refers to labor unions that represent students who are employed by their college or university to teach classes, conduct research and perform clerical duties.  As of 2014, there are at least 33 US graduate employee unions, 18 unrecognized unions in the US, and 23 graduate employee unions in Canada.  Almost all US graduate student unions are located in public universities, most of which formed during the 1990s.  Currently, New York University's Graduate Student Organizing Committee, affiliated with the United Automobile Workers, is the only graduate employee union recognized by a private university in the US.  Many of these unions refer to their workers as Academic Student Employees (ASEs) to reflect the fact that their membership may also include undergraduate students working in represented job classifications.

Supporting paragraphs: Graduate student employee unionization New York University
Answer: New York City