Question: The man who composed the music for Thomas and the King was the Boston Pops' principal conductor during what years?

full_context: Document 1: Thomas and Sally: Thomas and Sally (also known as "The Sailor's Return") is a dramatic pastoral opera in two acts by the composer Thomas Arne with an English libretto by Isaac Bickerstaff. The opera was meant to be performed as an "after piece", which is a short musical work to be performed after a spoken play.
Document 2: James Newton Howard: James Newton Howard (born June 9, 1951) is an American composer, conductor, music producer and musician. He has scored over 100 films and is the recipient of a Grammy Award, Emmy Award, and eight Academy Award nominations. His film scores include "Pretty Woman" (1990), "The Prince of Tides" (1991), "The Fugitive" (1993), "The Devil's Advocate" (1997), "The Sixth Sense" (1999), "Dinosaur" (2000), "" (2001), "Treasure Planet" (2002), "Signs" (2002), "The Village" (2004), "King Kong" (2005), "Batman Begins" (2005), "I Am Legend" (2007), "Blood Diamond" (2006), "The Dark Knight" (2008), "The Bourne Legacy" (2012), "The Hunger Games" series (2012–2015), "Nightcrawler" (2014) and "Fantastic Beasts and Where to Find Them" (2016). He has collaborated with directors M. Night Shyamalan, having scored nine of his films since "The Sixth Sense," and Francis Lawrence, having scored all of his films since "I Am Legend".
Document 3: I Am Thomas: I Am Thomas: A Brutal Comedy with Songs is a play based around the death of Thomas Aikenhead, the last person to be hanged for blasphemy in Britain. The play received its world premiere at the Liverpool Playhouse, in February 2016, before embarking on a short UK tour. It is a co-production between Told by an Idiot, the National Theatre of Scotland and the Royal Lyceum Theatre.
Document 4: Jerry Goldsmith: Jerrald King "Jerry" Goldsmith (February 10, 1929July 21, 2004) was an American composer and conductor most known for his work in film and television scoring. He composed scores for such noteworthy films as "", "The Sand Pebbles", "Logan's Run", "Planet of the Apes", "Patton", "Papillon", "Chinatown", "The Wind and the Lion", "The Omen", "The Boys from Brazil", "Capricorn One", "Alien", "Outland", "Poltergeist", "The Secret of NIMH", "Gremlins", "Hoosiers", "Total Recall", "Basic Instinct", "Rudy", "Air Force One", "L.A. Confidential", "Mulan", "The Mummy", three "Rambo" films, "Explorers" and four other "Star Trek" films.
Document 5: Bill Conti: William "Bill" Conti (born April 13, 1942) is an American composer and conductor best known for his film scores, including "Rocky" (and four of its sequels), "For Your Eyes Only", "Dynasty", and "The Right Stuff", which earned him an Academy Award for Best Original Score. He also received nominations in the Best Original Song category for "Gonna Fly Now" from "Rocky" and for the title song of "For Your Eyes Only". He has served as musical director at the Academy Awards a record nineteen times.
Document 6: Thomas and the King: Thomas and the King is a stage musical with music by John Williams, lyrics by James Harbert, and a book by Edward Anhalt. It is based on the story of Thomas Becket and Henry II of England, and set in 12th century England. It opened at Her Majesty's Theatre London, 16 October 1975 to poor reviews and failed to make it to Broadway. The set was designed by Tim Goodchild. The musical was directed and choreographed by Norman Maen. The cast included James Smilie, Richard Johnson, Caroline Villiers, Martin McEvoy, and Dilys Hamlett.
Document 7: Ennio Morricone: Ennio Morricone, (] ; born 10 November 1928) is an Italian composer, orchestrator, conductor, and former trumpet player. He composes a wide range of music styles, making him one of the most versatile, experimental and influential composers of all time, working in any medium. Since 1946 Morricone has composed over 500 scores for cinema and television, as well as over 100 classical works. His filmography includes over 70 award-winning films, including all Sergio Leone films since "A Fistful of Dollars" (including "The Good, the Bad and the Ugly" and "Once Upon a Time in the West"), all Giuseppe Tornatore films (since "Cinema Paradiso"), "The Battle of Algiers", Dario Argento's "Animal Trilogy", Bernardo Bertolucci's "1900", "", "Days of Heaven", several major films in French cinema, in particular the comedy trilogy "La Cage aux Folles I", "II", "" and "Le Professionnel", John Carpenter's "The Thing", Roland Joffé's "The Mission", Brian De Palma's "The Untouchables" and "Mission to Mars", Barry Levinson's "Bugsy" and "Disclosure", Wolfgang Petersen's "In the Line of Fire", Warren Beatty's "Bulworth", Liliana Cavani's "Ripley's Game" and Quentin Tarantino's "The Hateful Eight".
Document 8: Thomas Linley the elder: Thomas Linley (17 January 1733 – 19 November 1795) was an English tenor and musician active in Bath, Somerset. Born in Badminton, Gloucestershire, Linley began his musical career after he moved to Bath at age 11 and became apprentice to the organist Thomas Chilcot. After his marriage to Mary Johnson in 1752, Linley at first supported his wife and growing family predominantly as a music teacher. As his children grew and he developed their musical talent, he drew an increasing amount of income from their concerts while also managing the assembly rooms in Bath. When the new Bath Assembly Rooms opened in 1771, Linley became musical director and continued to promote his children's careers. He was eventually able to move to London with the thousands of pounds which he had amassed from their concerts.
Document 9: The Madness of King Scar: "The Madness of King Scar" is a song written by composer Elton John and lyricist Tim Rice, which premiered in the musical "The Lion King", a stage adaptation of Disney's 1994 animated film of the same name. Originally recorded and storyboarded for the movie, it was removed from the final version. Media outlets believed the decision to exclude the song was based on its explicit references to sexuality. "The Madness of King Scar" had been added to the musical along with two other songs. It is one of two tracks that more prominently features vocals from the character Nala. The title is a reference to the 1994 film "The Madness of King George".
Document 10: Steven Spielberg: Steven Allan Spielberg, {'1': ", '2': ", '3': 'KBE', '4': "} , {'1': ", '2': ", '3': 'OMRI', '4': "} (born December 18, 1946) is an American director, producer, and screenwriter. He is considered one of the founding pioneers of the New Hollywood era, as well as being viewed as one of the most popular directors and producers in film history. He is also one of the co-founders of DreamWorks Studios.
Document 11: Michael Giacchino: Michael Giacchino ( ; ] ; born October 10, 1967) is an American composer of music for films, television and video games. He composed the scores to the television series "Lost", "Alias" and "Fringe", the video game series "Medal of Honor" and "Call of Duty" and many films such as "The Incredibles", "", "Ratatouille", "Star Trek", "Up", "Super 8", "", "Star Trek Into Darkness", "Dawn of the Planet of the Apes", "Jurassic World", "Inside Out", "Zootopia", "Star Trek Beyond", "Doctor Strange", "Rogue One", "", "War for the Planet of the Apes" and "Coco".
Document 12: Hans Zimmer: Hans Florian Zimmer (] ; born 12 September 1957) is a German film score composer and record producer. Since the 1980s, he has composed music for over 150 films. His works include "The Lion King", for which he won the Academy Award for Best Original Score in 1995, the "Pirates of the Caribbean" series, "The Thin Red Line", "Gladiator", "The Last Samurai", "The Dark Knight Trilogy", "Inception", "Interstellar" and "Dunkirk".
Document 13: John Williams: John Towner Williams (born February 8, 1932) is an American composer, conductor, and pianist. With a career spanning over six decades, he has composed some of the most popular and recognizable film scores in cinematic history, including "Jaws", the "Star Wars" series, "Close Encounters of the Third Kind", "Superman", "E.T. the Extra-Terrestrial", the "Indiana Jones" series, the first two "Home Alone" films, the first two "Jurassic Park" films, "Schindler's List", and the first three "Harry Potter" films. Williams has been associated with director Steven Spielberg since 1974, composing music for all but three of his feature films. Other notable works by Williams include theme music for the Olympic Games, "NBC Sunday Night Football", "The Mission" theme used by NBC News, the television series "Lost in Space" and "Land of the Giants", and the incidental music for the first season of "Gilligan's Island". Williams has also composed numerous classical concertos and other works for orchestral ensembles and solo instruments. From 1980 to 1993, he served as the Boston Pops' principal conductor, and is now the orchestra's laureate conductor.
Document 14: Thomas J. King Jr.: Professor Thomas J. King Jr. (July 25, 1925 – 1994) was an educator, and an early user of word processing and sequence analysis to compare available early versions of William Shakespeare's plays for identification of variant texts and their analysis. Dr. King's historical work also researched original prompt copies of Elizabethan Era and Jacobean Era plays contemporary to Shakespeare, along with their marginalia, in order to identify stage directions and infer physical staging of Shakespeare's plays at the Globe and other London venues, as well as at provincial halls and inns where Elizabethan troupes performed on tour. In his extensive studies, Prof. King created databases of every Shakespeare play and other extant Elizabethan contemporary playhouse documents, by scene and character, to determine number of lines, and therefore the roles that could be doubled with sufficient time between for costume change, thus enabling him to determine the size of a working Elizabethan theater company.
Document 15: The Lion King (musical): The Lion King is a musical based on the 1994 Disney animated film of the same name with music by Elton John and lyrics by Tim Rice along with the musical score created by Hans Zimmer with choral arrangements by Lebo M. Directed by Julie Taymor, the musical features actors in animal costumes as well as giant, hollow puppets. The show is produced by Disney Theatrical Productions.
ground_truth: 1980 to 1993