Question: What was the nationality of Grant Tinker's wife?

Context paragraphs:
British National (Overseas): British National (Overseas), commonly known as BN(O), is one of the major classes of British nationality under British nationality law.  Holders of this nationality are British nationals and Commonwealth citizens, but not British citizens.  The nationality itself does not grant right of abode anywhere in the world, including United Kingdom or Hong Kong, but most BN(O)s possess either right of abode or right to land in Hong Kong.  BN(O)s are subject to British immigration controls and do not have the automatic right to live or work in the United Kingdom.

John Tinker (TV producer): John Tinker (born July 11, 1958) is an American television producer and writer.  Tinker is the co-creator of the CBS drama "Judging Amy", and has been an executive producer and writer on American television shows such as the CBS drama "Chicago Hope", the ABC drama "The Practice", and the NBC drama "The Book of Daniel".  Prior, Tinker won the 1986 Emmy for Outstanding Writing in a Drama series for the script "Time Heals", which he co-wrote with Tom Fontana and John Masius.  He is the son of Grant Tinker and the brother of Mark Tinker.  John graduated Middlebury College in 1981.

Producers Guild of America Award: The Producers Guild of America Award was originally established in 1990 by the Producers Guild of America as the Golden Laurel Awards, created by PGA Treasurer Joel Freeman with the support of Guild President Leonard Stern, in order to honor the visionaries who produce and execute motion picture and television product.  The ceremony has been hosted each year by celebrity host/presenters, including Nick Clooney, Michael Douglas, Robert Guillaume, James Earl Jones, Jack Lemmon, Shirley MacLaine, Garry Marshall, Walter Matthau, Ronald Reagan, Marlo Thomas, Grant Tinker, and Ted Turner, among others.

MTM Enterprises: MTM Enterprises (later known as MTM Enterprises, Inc.) was an American independent production company established in 1969 by Mary Tyler Moore and her then-husband Grant Tinker to produce "The Mary Tyler Moore Show" for CBS.  The name for the production company was drawn from Moore's initials.

38th Primetime Emmy Awards: The 38th Primetime Emmy Awards were presented on September 21, 1986, at the Pasadena Civic Auditorium in Pasadena, California.  The Emmy ceremony was cohosted by David Letterman and Shelley Long.  During the ceremony, Letterman saluted Grant Tinker, who had stepped down as chairman of NBC due to its parent company, RCA, having been acquired by General Electric.  The ceremony was also memorable for the presentation of the Governors' Award to Red Skelton, who in his acceptance speech said he had missed being on TV for the previous 16 years.

Mary Tyler Moore: Mary Tyler Moore (December 29, 1936 – January 25, 2017) was an American actress, known for her roles in the television sitcoms "The Mary Tyler Moore Show" (1970–1977), in which she starred as Mary Richards, a single woman working as a local news producer in Minneapolis, and "The Dick Van Dyke Show" (1961–1966), in which she played Laura Petrie, a former dancer turned Westchester homemaker, wife and mother.  Her film work includes 1967's "Thoroughly Modern Millie" and 1980's "Ordinary People", in which she played a role that was very different from the television characters she had portrayed, and for which she was nominated for an Academy Award for Best Actress.

Charles L. Webster and Company: In 1884, author and journalist Samuel Clemens, popularly known as Mark Twain, founded the subscription publishing firm of Charles L. Webster and Company.  The firm was named after Clemens' niece’s husband Charles L. Webster whom Clemens appointed the firm's business director.  The formation of the company came out of Clemens' dissatisfaction with his previous publishers including Charles H. Webb, Elisha Bliss, and James R. Osgood.  Clemens wanted to earn a dual income as both author and publisher of books.  The first two American publications of the firm, "Adventures of Huckleberry Finn" (1885) and the "Personal Memoirs of Ulysses S. Grant" (1885) were highly successful.  The Ulysses S. Grant memoir publication in particular financially helped Grant and his family at a time when Grant was sick having been diagnosed with throat cancer.  Grant was former President of the United States and top commanding general during the Civil War and Reconstruction.  After Grant died, Clemens gave Grant's widowed wife, Julia, a substantial record royalty check of $200,000 dollars.  According to Webster, prior to his death, Grant dictated the last part of the second volume to a stenographer working for the firm, due to writing fatigue, starting with Robert E. Lee's surrender at Appomattox.  Webster, who accompanied the stenographer, respected Grant's reputation and honored Grant's request to keep secret from reporters that Grant dictated part of the book.

Mark Tinker: Tinker was born in Stamford, Connecticut, the son of Ruth Prince (née Byerly) (1927–2004) and former NBC chairman Grant Tinker (1926–2016), and the brother of John Tinker, with whom he worked on "St. Elsewhere".  His stepmother was Mary Tyler Moore, who was married to Grant Tinker from 1962 until 1981.

Syrian nationality law: Syrian nationality law is the law governing the acquisition, transmission and loss of Syrian citizenship.  Syrian citizenship is the status of being a citizen of the Republic of Syria and it can be obtained by birth or naturalisation.  The Syrian nationality is transmitted by paternity (father) (see Jus sanguinis).  Therefore, Syrian nationality is determined solely by the father's nationality, while the place of birth is irrelevant.  In other words, birthright citizenship is not recognized since being born in Syria does not grant an automatic right to become a national.  In most cases, individuals are deemed to be Syrian nationals regardless of whether they are born inside or outside Syria as long as their father holds Syrian nationality.

Grant Tinker: Grant Almerin Tinker (January 11, 1926 – November 28, 2016) was an American television executive who served as Chairman and CEO of NBC from 1981 to 1986.  Additionally, he was the co-founder of MTM Enterprises and a television producer.  Tinker was the husband of actress and producer Mary Tyler Moore for 19 years (1962–1981).

Supporting paragraphs: Grant Tinker Mary Tyler Moore
Answer: American