Question: Eva Sámano was First Lady of which country between 1958 and 1964?

Context paragraphs:
La razón de mi vida: La Razón de mi vida (literal translation: "The Reason for My Life") is the autobiography of Eva Perón, First Lady of Argentina from 1946 until her death in 1952.  Published in 1951 shortly before Eva Perón's death, it became one of the fastest selling books in Argentine history.  Written in a conversational tone, it is largely a compilation of her speeches.  Eva Perón shares her perspectives on feminism and the role of women in political life, labor rights, poverty, and, of course, Peronism, the political movement founded by her husband Juan Perón.  In 1952, the year she died, the Congress of Argentina ordered the autobiography to be used as a textbook in the Argentine schools.

First Lady of Puerto Rico: First Lady of Puerto Rico is the title given by the government of Puerto Rico to the spouse of the Governor of Puerto Rico or the daughters of the Governor should the Governor be a lady, single, divorced, or a widow.  The First Lady leads the Office of the First Lady of Puerto Rico and is expected to represent the women of Puerto Rico in elegance and demeanor.  The current First Lady is Beatriz Areizaga, wife of Ricardo Rosselló.

Patricia Kempthorne: Patricia Kempthorne (born June 3, 1950) was the First Lady of Idaho and the wife of Gov. Dirk Kempthorne.  Mrs. Kempthorne was Idaho's first lady from 1999 until 2006.  As first lady she was active in issues affecting children and families in Idaho and took the lead in assisting state government with children's policy.  She is a former First Lady of Boise, Idaho.

Eva Sámano: Eva Sámano (May 5, 1910 - January 7, 1984) was a Mexican educator.  She was the first wife of President Adolfo López Mateos and First Lady of Mexico from 1958 to 1964.

The Woman with the Whip: The Woman with the Whip is a 1952 biography of political leader Eva Perón, the late First Lady and Spiritual Leader of the Nation of Argentina.  Published in England and the United States shortly after Eva Perón's death, it was the first hostile biography of Eva Perón to be published and, despite the criticism that it is lacking in historical value, has therefore been used by her detractors ever since.  This book is thought to be the basis for the Andrew Lloyd Webber and Tim Rice musical "Evita".  However, the book was never officially credited as such, and Rice incorporated many other historical materials as background.

Vicki Risch: Vicki Risch is the former First Lady of Idaho and the wife of U.S. Sen. Jim Risch, who served as Governor of Idaho in 2006.  She became First Lady on May 26, 2006, when her husband succeeded former Gov. Dirk Kempthorne, who resigned to become United States Secretary of the Interior.  Mrs. Risch succeeded former First Lady Patricia Kempthorne who had held the post for over seven years.  Mrs. Risch served as First Lady until January 2007, as her husband did not seek a full term as governor, but rather was reelected to his old post as lieutenant governor.

Adolfo López Mateos: Adolfo López Mateos (] ; 26 May 1909 – 22 September 1969) was a Mexican politician affiliated with the Institutional Revolutionary Party (PRI) who served as President of Mexico from 1958 to 1964.

Office of the First Lady of the United States: The Office of the First Lady of the United States is the staff accountable to the First Lady of the United States.  The office and its responsibilities, while not mandated, have grown as the role of the First Lady has grown and formalized through the history of the United States.  The Office of the First Lady is an entity of the White House Office, part of the Executive Office of the President.

Vanda Pignato: Vanda Guiomar Pignato (born February 16, 1963) is a Brazilian-born Salvadoran lawyer, human rights activist, politician, women's rights activist, and former First Lady of El Salvador from 2009 until 2014.  Pignato became First Lady of El Salvador on June 1, 2009, the same day that her husband, President Mauricio Funes appointed her as the country's Secretary of Social Inclusion from 2009 to 2014.  The appointment made Pignato the first sitting First Lady in El Salvador's history to hold a political position.  Funes' successor, President Salvador Sánchez Cerén, reappointed Pignato as Secretary of Social Inclusion when he took office in June 2014.

List of First Ladies of the United States: The First Lady of the United States is the hostess of the White House.  The position is traditionally filled by the wife of the President of the United States, but, on occasion, the title has been applied to women who were not presidents’ wives, such as when the president was a bachelor or widower, or when the wife of the president was unable to fulfill the duties of the First Lady herself.  The First Lady is not an elected position; it carries no official duties and receives no salary.  Nonetheless, she attends many official ceremonies and functions of state either along with or in place of the president.  Traditionally, the First Lady does not hold outside employment while occupying the office.  She has her own staff, including the White House Social Secretary, the Chief of Staff, the Press Secretary, the Chief Floral Designer, and the Executive Chef.  The Office of the First Lady is also in charge of all social and ceremonial events of the White House, and is a branch of the Executive Office of the President.

Supporting paragraphs: Eva Sámano Adolfo López Mateos
Answer: Mexico