Question: What position did the former American first lady who employed Ann M. O'Leary during her husband's presidency hold in the Obama administration?

full_context: Document 1: Tony Rodham: Anthony Dean "Tony" Rodham (born 1954) is an American consultant and businessman who is the youngest brother of former First Lady of Arkansas, First Lady, Senator from New York and Secretary of State, Hillary Rodham Clinton, and the brother-in-law of former U.S. President Bill Clinton. His business dealings have sometimes appeared to take advantage of his connections to the Clintons and accordingly have sometimes attracted public scrutiny.
Document 2: Hillaryland: Hillaryland was the self-designated name of a group of core advisors to Hillary Clinton, when she was First Lady of the United States and again when, as United States Senator, she was one of the Democratic Party candidates for President in the 2008 U.S. election.
Document 3: Clinton family: The Clinton family is a prominent American political family related to Bill Clinton, the 42nd President of the United States (1993–2001), and his wife Hillary Clinton, the 67th United States Secretary of State (2009–13), Senator from New York (2001–09) and the First Lady of the United States (1993–2001). Their immediate family was the First Family of the United States from 1993 to 2001. In 2016, Hillary Clinton became the first female presidential nominee from a major political party in United States history. The Clintons (Bill and Hillary) are the first married couple to each be nominated for president. She was defeated in the election by businessman Donald Trump.
Document 4: Ann O'Leary: Ann M. O'Leary (born 1971 or 1972) is an American political advisor, lawyer, and nonprofit leader who specializes in early childhood education. She worked in the Bill Clinton administration and for Hillary Clinton during her time as First Lady, Senate career, and 2008 and 2016 presidential campaigns. She served in leadership positions at various nonprofit organizations that focus on early childhood education, including Next Generation and the Opportunity Institute. After Clinton's unsuccessful 2016 presidential campaign, O'Leary became a lawyer at the Palo Alto office of the law firm Boies, Schiller & Flexner.
Document 5: United States Senate career of Hillary Clinton: Hillary Rodham Clinton served as a United States Senator from New York from January 3, 2001 to January 21, 2009. She won the United States Senate election in New York, 2000 and the United States Senate election in New York, 2006. Clinton resigned from the Senate on January 21, 2009 to become United States Secretary of State for the Obama Administration.
Document 6: Kellyanne Conway: Kellyanne Elizabeth Conway (née Fitzpatrick; born January 20, 1967) is the current Counselor to U.S. president Donald Trump. She is the first woman to ever run a successful presidential campaign. She has been a Republican Party campaign manager, strategist, and pollster, and was formerly president and CEO of The Polling Company Inc./Woman Trend.
Document 7: Susan Thomases: Susan P. Thomases (born 1944) is a New York-based attorney. She served as personal counsel and an informal adviser to Hillary Clinton during the presidency of Bill Clinton. She was a prominent witness during the Senate Whitewater Hearings in 1995. She served as the model for the character Lucille Kaufmann from the 1996 political novel "Primary Colors".
Document 8: Ann Dunham: Stanley Ann Dunham (November 29, 1942 – November 7, 1995) was an American anthropologist who specialized in the economic anthropology and rural development of Indonesia. She was the mother of Barack Obama, the 44th President of the United States.
Document 9: Cheryl Mills: Cheryl D. Mills (born 1965) is an American lawyer and corporate executive. She first came into public prominence while serving as deputy White House Counsel for President Bill Clinton, whom she defended during his 1999 impeachment trial. She has worked for New York University as Senior Vice President, served as Senior Adviser and Counsel for Hillary Clinton's 2008 presidential campaign, and is considered a member of Hillary Clinton's group of core advisers, self-designated as "Hillaryland". She served as Counselor and Chief of Staff to Hillary Clinton during her whole tenure as United States Secretary of State. After leaving the State Department in January, 2013, she founded BlackIvy Group, which builds businesses in Africa.
Document 10: Hillary Clinton presidential campaign, 2008: The 2008 presidential campaign of Hillary Rodham Clinton, then junior United States Senator from New York, was announced on her website on January 20, 2007. Hillary Clinton was previously the First Lady of the United States and First Lady of Arkansas prior to her election as U.S. Senator from New York. She is also the wife of former President Bill Clinton. Clinton was the source of much media speculation since having expressed interest in being a candidate in the 2008 presidential election since at least October 2002.
Document 11: Hugh Rodham (born 1950): Hugh Edwin Rodham (born 1950) is an American lawyer and former Democratic Party politician who is the brother of former New York Senator, First Lady, and Secretary of State, Hillary Rodham Clinton, and the brother-in-law of former U.S. President Bill Clinton.
Document 12: Kirsten Gillibrand: Kirsten Elizabeth Gillibrand (née Rutnik; ; born December 9, 1966) is an American attorney and politician who since 2009, has served as the junior United States Senator from New York, alongside the Democratic Leader of the United States Senate, Chuck Schumer. Before the Senate, she served for two years (2007-09) in the United States House of Representatives, representing New York's 20th congressional district. She is a member of the Democratic Party.
Document 13: United States Senate election in New York, 2000: The United States Senate election in New York in 2000 was held on November 7, 2000. Hillary Rodham Clinton, then First Lady of the United States and the first First Lady to run for political office, defeated Congressman Rick Lazio. The general election coincided with the U.S. presidential election.
Document 14: United States Senate election in New York, 2006: The 2006 United States Senate election in New York was held November 7, 2006. Incumbent Democratic U.S. Senator Hillary Rodham Clinton won, by a more than two-to-one margin, a second term representing New York in the United States Senate. Clinton was challenged by Republican John Spencer, a former Mayor of Yonkers, New York. Spencer won his party nomination by defeating former national security staffer K. T. McFarland in a primary.
Document 15: Hillary Clinton: Hillary Diane Rodham Clinton ( ; born October 26, 1947) is an American politician who was the First Lady of the United States from 1993 to 2001, U.S. Senator from New York from 2001 to 2009, 67th United States Secretary of State from 2009 to 2013, and the Democratic Party's nominee for President of the United States in the 2016 election.
ground_truth: United States Secretary of State