Question: The thirteenth episode of "The Simpsons"' seventh season features a president who was Vice President of the US during what years?
Context: "First Person Shooter" is the thirteenth episode of the seventh season of the science fiction television series "The X-Files".  It premiered on the Fox network in the United States on February 27, 2000.  The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology.  "First Person Shooter" earned a Nielsen household rating of 9.3, being watched by 15.31 million people in its initial broadcast.  The episode received mostly negative reviews from critics. "Children of the Damned" is the thirteenth episode of the first season of The CW television series, "The Vampire Diaries" and the thirteenth episode of the series overall.  It originally aired on February 4, 2010.  The episode was written by Kevin Williamson and Julie Plec and directed by Marcos Siega. "Two Stories" is the thirteenth episode of the seventh season of the American medical drama "House".  It aired on February 21, 2011.  The entire narrative of the episode takes place through a series of flashbacks within flashbacks similar to the Season 1 episode "Three Stories". "Last Lunch" is the thirteenth episode of the seventh season of the American television comedy series "30 Rock", the 138th overall episode, and the second part of the one-hour series finale.  It was directed by Beth McCarthy-Miller and written by Tina Fey and Tracey Wigfield.  The episode originally aired as an hour-long episode, along with "Hogcock! ", on NBC on January 31, 2013.  Guest stars in this episode include Marceline Hugot, Al Roker, Conan O'Brien and Alice Ripley. George Herbert Walker Bush (born June 12, 1924) is an American politician who was the 41st President of the United States from 1989 to 1993 and the 43rd Vice President of the United States from 1981 to 1989.  A member of the Republican Party, he was previously a congressman, ambassador, and Director of Central Intelligence.  He is the oldest living former President and Vice President.  Previously known as simply "George Bush", since 2001, Bush has often been referred to as "George H. W. Bush", "Bush 41", "Bush the Elder", or "George Bush Senior" to distinguish him from his eldest son, George W. Bush, the 43rd President of the United States. "Two Bad Neighbors" is the thirteenth episode of "The Simpsons"<nowiki>'</nowiki> seventh season.  It originally aired on the Fox network in the United States on January 14, 1996.  In the episode, George H. W. Bush, the 41st President of the United States, voiced in the episode by Harry Shearer, moves into the house across the street from the Simpson family. Jim Lentz is the chief executive officer for Toyota North America; president and chief operating officer of Toyota Motor North America, Inc. (TMA); and a senior managing officer of the parent company Toyota Motor Corporation (TMC) which is located in Japan.  In that role Lentz manages all of Toyota’s North American affiliate companies which include TMA, Toyota Motor Sales, U.S.A., Inc. (TMS), and Toyota Motor Engineering & Manufacturing, North America, Inc. (TEMA), which includes responsibilities for Toyota Motor Manufacturing Canada Inc. (TMMC), and oversight for Toyota Canada, Inc. (TCI).  Lentz also serves as the chairman of the North American Executive Committee.  This is composed of the top leaders from the affiliate companies.  Most recently Lentz was the president and chief executive officer of TMS and senior vice president of TMA and served in a global advisory capacity as the managing officer for TMC.  Before that he served as president and chief operating officer and executive vice president of TMS.  Lentz previously held several executive positions including Toyota division group vice president and general manager where he oversaw all sales, logistics and marketing activities for Toyota and Scion regional sales offices and distributors.  He also served as the group vice president of marketing for the Toyota division and vice president of Scion, and was responsible for the initial launch of a new line of vehicles.  Lentz spent several years in the field as vice president and general manager of the Los Angeles region and before that general manager of the San Francisco region.  Prior to his role as general manager Lentz was vice president of marketing services for CAT in Maryland.  He has also held several other TMS positions, including field training manager, sales administration manager and truck sales team member.  Lentz joined Toyota in 1982 as the merchandising manager for its Portland, Oregon region where he later became the distribution manager and field operations manager.  He serves as chairman on the board of directors of The Global Automakers and is also a member of the executive advisory board for Daniels College of Business at the University of Denver (DU), his alma mater.  He was named “Marketer of the Year” by Advertising Age in 2006, an Automotive News “All Star” in 2007 and honored at Industry Leader of the year. "Bury Me Here" is the thirteenth episode of the seventh season and 96th episode overall of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on March 12, 2017.  The episode was written by Scott M. Gimple and directed by Alrick Riley. "Fifteen Percent" is the thirteenth episode of the first season of the ABC sitcom "Modern Family" and the thirteenth episode of the series overall.  It originally aired on January 24, 2010, on ABC.  The episode was written by co-creator Steven Levitan and directed by Jason Winer. "Sisters at Heart" is the thirteenth episode of the seventh season, and 213th episode overall, of the American Broadcasting Company (ABC) fantasy television sitcom "Bewitched".  This Christmas episode aired on ABC on December 24, 1970, and again the following December.
Answer: 1981 to 1989