Question: In which county is the city in which Ryan McGarry was born ?

Context paragraphs:
Pop Noir: Pop Noir is a Los Angeles-based indie dancerock duo formed by British-born twin brothers Joe and Luke McGarry in 2004, while they were 16-year-old students at the Orange County High School of the Arts.  The band began to build a following in the indie clubs of Southern California, and did a brief tour of Europe in late 2006, showcasing at In The City in Manchester, and playing dates in London and Paris.

John McGarry: John McGarry, OC (born 1957) is a political scientist from Northern Ireland.  He was born in Belfast and grew up in Ballymena, County Antrim.  He is currently Professor of Political Studies and Canada Research Chair in Nationalism and Democracy at Queen's University in Kingston, Ontario, Canada.  He is the author of numerous influential books about ethnic conflict and particularly The Troubles.  Many of the books were co-authored with Brendan O'Leary, whom McGarry met when they both attended Saint MacNissi's College.  McGarry and O'Leary's "Policing Northern Ireland: Proposals for a New Start" (Blackstaff Press, 1999) had a significant influence on the work of the Independent Commission on Policing for Northern Ireland.  He currently sits on the advisory council of the Centre for the Study of Democracy and worked as a senior advisor on power-sharing to the United Nations in 2008–09.

Chicago: Chicago ( or ), officially the City of Chicago, is the third-most populous city in the United States.  With over 2.7 million residents, it is also the most populous city in both the state of Illinois and the Midwestern United States.  It is the county seat of Cook County.  The Chicago metropolitan area, often referred to as Chicagoland, has nearly 10 million people and is the third-largest in the U.S. Chicago has often been called a global architecture capital.  Chicago is considered one of the most important business centers in the world.

Flynn McGarry: Flynn McGarry (born November 1998) is an American chef based in New York City.  He has been called the "Justin Bieber of food" and is known for hosting dinner tasting restaurant Eureka in Los Angeles and New York City since he was 11.  He has staged at Eleven Madison Park, Alinea, Next, Geranium, and Maaemo.

Golden Cycle Mining and Reduction Company: Golden Cycle Mining and Reduction Company was a mining company in Colorado City (now Old Colorado City) in El Paso County, Colorado.  The company was incorporated in West Virginia and was listed on the Colorado Springs Exchange.  Albert E. Carlton was part owner of the Golden Cycle.  Directors included Carlton, Spencer Penrose, Richard Roelofs, H. McGarry, L.G. Carlton, Bulkeley Wells.

Alvin, Texas: Alvin is a city in the U.S. state of Texas within the Houston-The Woodlands-Sugar Land metropolitan area and Brazoria County.  As of the 2010 U.S. Census, the city population was 24,236.  Alvin's claim to fame is Baseball Hall of Famer Nolan Ryan, who moved with his family to the city in 1947 as an infant and lived there until he moved to Round Rock in 2003.  The Nolan Ryan Museum is in the Nolan Ryan Foundation and Exhibit Center on the campus of Alvin Community College.

Steven McGarry: Steven Thomas McGarry (born 28 September 1979 in Paisley) is a retired Scottish footballer who last played for A-League club Perth Glory FC.  He joined Perth Glory in January 2010 after playing at the top level in the Scottish Premier League with St Mirren, Ross County and Motherwell.

Ryan McGarry: Ryan McGarry (born 1986) is an Irish hurler who played as a goalkeeper for the Antrim senior team.

Ryan McGarry (physician): Ryan McGarry is an American, Chicago-born and Irvine-raised cinematographer and Emergency physician who directed the documentary "Code Black".  "Code Black" is the basis for the TV series "Code Black".

Code Black (TV series): Code Black is an American medical drama television series created by Michael Seitzman which premiered on CBS on September 30, 2015.  It takes place in an overcrowded and understaffed emergency room in Los Angeles, California, and is based on a documentary by Ryan McGarry.  On May 16, 2016, the show was renewed for a 13-episode second season which premiered on September 28, 2016.  On November 14, 2016, CBS added three more episodes to bring the season two total to 16.

Supporting paragraphs: Ryan McGarry (physician) Chicago
Answer: Cook County.