Question: Both Arthur T. Gregorian and Robert Nalbandyan belongs to which national?

Context paragraphs:
Martha Josey: Martha Josey (born Martha Lavaughn Arthur in Gregg County, Texas on March 11, 1938, daughter of Robert Jonas Arthur, Sr. and the former Martha James) is a professional barrel racer who has been in active rodeo competition since 1964.  She has earned numerous titles at competitions such as the National Finals Rodeo (NFR) and events sanctioned by the National Barrel Horse Association (NBHA), and Women's Professional Rodeo Association (WPRA).  She also competed in barrel racing as an exhibition event during the 1988 Calgary Olympics, and is the founder and co-owner of the Josey Ranch Barrel Racing Clinic.  She was inducted into the Cowgirl Hall of Fame in 1985.  She and her husband, R.E. Josey, were jointly inducted into the Texas Cowboy Hall of Fame in 2002, and the Texas Rodeo Cowboy Hall of Fame in 2007.  She was inducted into the Rodeo Hall of Fame of the National Cowboy and Western Heritage Museum in 2011.

Peel Island, Cumbria: Peel Island (formerly known as Montague Island or the Gridiron) is one of the three islands of Coniston Water in the English Lake District, Cumbria.  The two others are Fir Island (which is connected to the shore unless the water is particularly high) and Oak Island.  It is most famous for being one of the inspirations for Arthur Ransome's Wild Cat Island.  Today, it is a popular tourist destination, and belongs to the National Trust.

Cook Inlet Keeper: Cook Inlet Keeper is a non-profit water conservation and ecology organization based in Homer, Alaska.  Their stated goal is ""promoting sound public policies that protect fish habitat and water quality; and holding individuals, industry and agencies accountable for habitat, water quality and human health in the Cook Inlet watershed. ""  The organization was founded in 1994 with funds from a legal settlement involving oil companies that extracted resources from Cook Inlet.  They are part of the Waterkeeper Alliance.  They were involved in pressuring the National Marine Fisheries Service to list the Cook Inlet population of Beluga Whales as endangered.  They have also been active in opposing open-pit mining in the Cook Inlet area.  They also manage a water quality laboratory in Homer that monitors 240 sites around Cook Inlet.  In 2005, Robert F. Kennedy Jr. spoke in support of their efforts at the groups ten-year anniversary celebration.  He stated that "The fish in that inlet belongs to the people.  Everybody has a right to use them.  Nobody has a right to use them in a way that will diminish or injure their use and enjoyment by others."

Arthur T. Gregorian: Arthur T. Gregorian, (1909 – January 14, 2003), was a Greater Boston oriental rug dealer and author of books on oriental rugs, and considered to be the world's leading collector of rare, inscribed Armenian rugs.

It Always Rains on Sunday: It Always Rains on Sunday is a 1947 British film adaptation of Arthur La Bern's novel by the same name, directed by Robert Hamer.  The film has been compared with the poetic realism movement in the French cinema of a few years earlier by the British writers Robert Murphy, in the "Oxford Dictionary of National Biography", and Graham Fuller.

Juilliard String Quartet: The Juilliard String Quartet is a classical music string quartet founded in 1946 at the Juilliard School in New York.  The original members were violinists Robert Mann and Robert Koff, violist Raphael Hillyer, and cellist Arthur Winograd; Current members are Joseph Lin and Ronald Copes violinists, violist Roger Tapping, and cellist Astrid Schween.  In 2010 Nick Eanet resigned from the Quartet because of health issues and was replaced by Joseph Lin in 2011.  Former second violinist, later first after Mann's retirement, Joel Smirnoff left the quartet after its 2008-2009 season to become president of the Cleveland Institute of Music.  Since the Quartet's inception in 1946, it has been the quartet-in-residence at the Juilliard School.  It has received numerous awards, including four Grammys and membership in the National Academy Recording Arts and Sciences’ Hall of Fame.  In February 2011, the Juilliard Quartet received the NARAS Lifetime Achievement Award for its outstanding contributions to recorded classical music.

Robert Nalbandyan: Robert Nalbandyan (1937–2002) was an Armenian chemist, the co-discoverer of photosynthetic protein plantacyanin, a pioneer in the field of free radicals, and a noted and prolific writer on various subjects in the field of chemistry.

Joseph S. Iseman: Joseph S. Iseman (May 29, 1916 – April 25, 2006) was an attorney and educator known for his work with National Television, Children's Television Workshop, also known as Sesame Workshop, and Bennington College (where he stepped in as acting president in 1976), as well as the American University of Paris, where he served for a time as the vice chair.  As a lawyer at the firm of Paul, Weiss, Rifkind, Wharton & Garrison LLP, Iseman notably managed the estates of composer Cole Porter, writer Vladimir Nabokov, writer Jean Stafford, poet Robert Lowell, writer A. J. Liebling, artist Robert Motherwell, writer and historian Theodore H. White, "Saturday Review" and its editor Norman Cousins, and playwright Arthur Miller.  He was also the father of New York City businessman Frederick Iseman.

Robert Onsare Monda: Robert Onsare Monda is a Kenyan politician.  He belongs to NARC and was elected to represent the Nyaribari Chache Constituency in the National Assembly of Kenya since the Kenyan parliamentary election, 2007.

Bobby Connors: Robert Allan "Bob" Connors (born October 19, 1902 in Edinburgh, Scotland, United Kingdom and raised in Port Arthur, Ontario – d. July 27, 1931 in Port Arthur, Ontario) was a professional ice hockey left winger and defenceman who played 78 games in the National Hockey League.  He played with the Detroit Cougars and New York Americans.

Supporting paragraphs: Arthur T. Gregorian Robert Nalbandyan
Answer: Armenian