Question: In which U.S. city did Robert B. Leighton spend his professional career?

Context paragraphs:
California Institute of Technology: The California Institute of Technology (abbreviated Caltech) is a private doctorate-granting university located in Pasadena, California, United States.

Robert B. Leighton: Robert Benjamin Leighton ( ; September 10, 1919 – March 9, 1997) was a prominent American experimental physicist who spent his professional career at the California Institute of Technology (Caltech).  His work over the years spanned solid state physics, cosmic ray physics, the beginnings of modern particle physics, solar physics, the planets, infrared astronomy, and millimeter- and submillimeter-wave astronomy.  In the latter four fields, his pioneering work opened up entirely new areas of research that subsequently developed into vigorous scientific communities.

Robert B. Redman: Robert B. Redman (September 6, 1908 – June 9, 1960) was an American football, basketball, and baseball player, coach, and educator.  He served as the head football coach at Bloomsburg University of Pennsylvania from 1947 to 1951, compiling a record of 38–4 and winning three Pennsylvania State Athletic Conference champions (1948, 1949, and 1951).  After leaving Bloomsburg, Redman coached football and baseball at East Orange High School in East Orange, New Jersey from 1952 to 1956.  He served as the principal there from 1956 until 1960, when he was named superintendent of schools.  Before assuming that role, Redman died of a heart attack at the age of 51 on June 9, 1960.  Bloomsburg's home football stadium, Robert B. Redman Stadium, was named for the coach when it opened in 1974.

Lowell (MBTA station): Lowell is a commuter rail station and northern terminus of the MBTA Commuter Rail Lowell Line, located off Thorndike Street (MA-3A) near the end of the Lowell Connector south of downtown Lowell, Massachusetts.  The station forms part of the Charles A. Gallagher Transit Terminal, which also incorporates the Robert B. Kennedy Bus Transfer Center, named for local politician Robert B. Kennedy.  It is a major park-and-ride station for the commuter rail system, serving commuters from Lowell, northern Massachusetts, and southern New Hampshire.  The Kennedy Bus Transfer Center is the transfer point for all Lowell Regional Transit Authority local bus routes and several intercity bus routes by other operators.

The Feynman Lectures on Physics: The Feynman Lectures on Physics is a physics textbook based on some lectures by Richard P. Feynman, a Nobel laureate who has sometimes been called "The Great Explainer".  The lectures were presented before undergraduate students at the California Institute of Technology (Caltech), during 1961–1963.  The book's co-authors are Feynman, Robert B. Leighton, and Matthew Sands.

Robert McGehee: Robert B. McGehee (March 19, 1943 – October 9, 2007) Robert B. McGehee was chairman and chief executive officer of Progress Energy.  He became chief executive officer on March 1, 2004, and chairman on May 12, 2004.  McGehee was president and chief operating officer from October 2002 to March 2004.  He died of a stroke while on a business trip in London.

Jim Leighton: James Leighton MBE (born 24 July 1958) is a Scottish former football goalkeeper.  Among the clubs he played for are Aberdeen (two spells), Manchester United and Hibernian.  Leighton was part of the highly successful Aberdeen team of the 1980s, which won three Scottish league championships, four Scottish Cups and the European Cup Winners' Cup in 1983.  Alex Ferguson, who had managed Leighton at Aberdeen, signed him for Manchester United in 1988.  After he conceded three goals in the 1990 FA Cup Final, Leighton was dropped from the United team for the replay.  After short stints with Arsenal, Reading, Dundee and Sheffield United, Leighton rebuilt his international career after he moved to Hibernian in 1993.  He returned to Aberdeen in 1997 and retired from playing professional football in 2000.  Leighton also played in 91 international games for Scotland and earned selection for four World Cup squads (1982, 1986, 1990 and 1998).

Robert B. Lewis Stakes: The Robert B. Lewis Stakes is an American Thoroughbred horse race held annually in early February at Santa Anita Park in Arcadia, California.  Raced over a distance of 1 ⁄ miles on dirt, the Grade III race is open to three-year-old horses.  The Robert B. Lewis Stakes is one of the key prep races leading to the Santa Anita Derby each year.

Mr. Sloane: Mr. Sloane is a British-American comedy television series that was first broadcast on Sky Atlantic on 23 May 2014.  The six-part series was written by Robert B. Weide, Aschlin Ditta and Oliver Lansley and directed by Robert B. Weide.  It is set in Watford in 1969.

Virginia Tech Pamplin College of Business: The Virginia Tech Pamplin College of Business (commonly known as Pamplin College of Business or Pamplin), is Virginia Tech's business school.  Founded in 1965, it has more than 41,000 alumni.  The current Dean is Robert Sumichrast.  In 1986 the college was renamed following a donation from alumnus Robert B. Pamplin and his son Robert B. Pamplin Jr..

Supporting paragraphs: Robert B. Leighton California Institute of Technology
Answer: Pasadena, California