You will be given a definition of a task first, then some input of the task.
In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: John Forbes Kerry (born December 11, 1943) is an American diplomat and politician who served as the 68th United States Secretary of State from 2013 to 2017. A Democrat, he previously served in the United States Senate, where he was chairman of the Senate Committee on Foreign Relations. He was the Democratic nominee in the 2004 presidential election, losing narrowly to Republican incumbent George W. Bush., Medford is a city 3.2 miles northwest of downtown Boston on the Mystic River in Middlesex County, Massachusetts, United States. In the 2010 U.S. Census, Medford's population was 56,173. It is home to Tufts University., Charles Tufts (July 16, 1781  December 24, 1876) was an American businessperson and philanthropist., George Walker Bush (born July 6, 1946) is an American politician who served as the 43rd President of the United States from 2001 to 2009 and 46th Governor of Texas from 1995 to 2000. He is the eldest son of Barbara and George H. W. Bush. After graduating from Yale University in 1968 and Harvard Business School in 1975, he worked in oil businesses. Bush married Laura Welch in 1977 and ran unsuccessfully for the House of Representatives shortly thereafter. He later co-owned the Texas Rangers baseball team before defeating Ann Richards in the 1994 Texas gubernatorial election. Bush was elected president in 2000 after a close and controversial election against Al Gore, becoming the fourth president to be elected while receiving fewer popular votes nationwide than an opponent. He is the second president to have been a son of a former president, the first having been John Quincy Adams. He is also a brother of Jeb Bush, a former Governor of Florida and candidate for the Republican presidential nomination in the 2016 presidential election., Massachusetts ; officially the Commonwealth of Massachusetts, is the most populous state in the New England region of the northeastern United States. It is bordered by the Atlantic Ocean to the east, the states of Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York to the west. The state is named for the Massachusett tribe, which once inhabited the area. The capital of Massachusetts and the most populous city in New England is Boston. Over 80% of Massachusetts' population lives in the Greater Boston metropolitan area, a region influential upon American history, academia, and industry. Originally dependent on agriculture, fishing and trade, Massachusetts was transformed into a manufacturing center during the Industrial Revolution. During the 20th century, Massachusetts' economy shifted from manufacturing to services. Modern Massachusetts is a global leader in biotechnology, engineering, higher education, finance, and maritime trade., Jean Mayer (19 February 1920  1 January 1993) was a French-American scientist best known for his research on the physiological bases of hunger and the metabolism of essential nutrients, and for his role in shaping policy on world hunger at both the national and international levels. As a professor at the Harvard School of Public Health, Mayer directed a laboratory that did groundbreaking work on the hypothalamic regulation of obesity and various metabolic disorders. In 1968-69, having worked as an adviser to the World Health Organization and UNICEF, he was appointed principal organizer and chair of the first White House Conference on Food, Nutrition, and Health. At Harvard University, he served as Master of Dudley House before leaving in 1976 to become the tenth President of Tufts University in Medford, Massachusetts, where he is given credit for having brought about an unprecedented rise in the university's national reputation. He died unexpectedly on January 1, 1993., Tufts University is a private research university incorporated in the municipality of Medford, Massachusetts, United States. Tufts College was founded in 1852 by Christian Universalists who worked for years to open a non-sectarian institution of higher learning. Charles Tufts donated the land for the campus on Walnut Hill, the highest point in Medford, saying that he wanted to set a "light on the hill." The name was changed to Tufts University in 1954, although the corporate name remains "the Trustees of Tufts College." For more than a century, Tufts was a small New England liberal arts college. The French American nutritionist and former professor at the Harvard School of Public Health Jean Mayer became president of Tufts in the late 1970s and, through a series of rapid acquisitions, transformed the school into a larger research university., Forbes is an American business magazine. Published bi-weekly, it features original articles on finance, industry, investing, and marketing topics. "Forbes" also reports on related subjects such as technology, communications, science, and law. Its headquarters is located in Jersey City, New Jersey. Primary competitors in the national business magazine category include "Fortune" and "Bloomberg Businessweek". The magazine is well known for its lists and rankings, including its lists of the richest Americans (the Forbes 400) and rankings of world's top companies (the Forbes Global 2000). Another well-known list by the magazine is the The World's Billionaires list., Matt Bai / ba / is national political columnist for Yahoo! News . Prior to that , he was the chief political correspondent for the New York Times Magazine , where he covered both the 2004 and 2008 presidential campaigns . Bai often explores issues of generational change in American politics and society . His seminal cover stories in the magazine include the 2008 cover essay `` Is Obama the End of Black Politics ? '' and a 2004 profile of John Kerry titled `` Kerry 's Undeclared War . '' His work was honored in both the 2005 and 2006 editions of The Best American Political Writing . Bai is a graduate of the College of Arts and Sciences at Tufts University in Medford , MA . In 2014 , Bai appeared as himself in the second season of TV show House of Cards ., Subject: matt bai, Relation: date_of_birth, Options: (A) 11 (B) 1781 (C) 1852 (D) 1876 (E) 19 (F) 1943 (G) 1954 (H) 1968 (I) 1977 (J) 1995 (K) 2 (L) 2000 (M) 2001 (N) 2004 (O) 2009 (P) 2010 (Q) 2013 (R) 3 (S) 400 (T) 6 (U) 69 (V) 80 (W) february 1920 (X) january 1993
Output:
1968