Question: What form of drama based on human suffering was added to Gilmore Girls by Amy Sherman-Palladino?

full_context: Document 1: List of Gilmore Girls episodes: "Gilmore Girls" is an American comedy-drama television series created by Amy Sherman-Palladino. Sherman-Palladino shares executive producer duties with David S Rosenthal, Gavin Polone, Daniel Palladino. It is produced by Dorothy Parker Drank Here Productions, Hofflund/Polone and Warner Bros. Television. The show follows single mother Lorelai Gilmore (Lauren Graham) and her daughter Rory Gilmore (Alexis Bledel) in the fictional town of Stars Hollow, Connecticut, a close-knit small town with many quirky characters, located roughly thirty minutes south of Hartford.
Document 2: Kelly Bishop: Carole "Kelly" Bishop (born February 28, 1944) is an American actress and dancer, best known for her roles as matriarch Emily Gilmore on the series "Gilmore Girls" and as Marjorie Houseman, the mother of Jennifer Grey's Frances "Baby" Houseman in the film "Dirty Dancing." Bishop created the role of Sheila in "A Chorus Line," for which she won a Tony Award for Best Performance by a Featured Actress in a Musical. She also starred as Fanny Flowers in the ABC Family short-lived comedy-drama series "Bunheads."
Document 3: Gilmore Girls: A Year in the Life: Gilmore Girls: A Year in the Life is an American web television series on the streaming service Netflix. It is a sequel to "Gilmore Girls", an American comedy-drama television series created by Amy Sherman-Palladino and starring Lauren Graham and Alexis Bledel, which ran from 2000 to 2007 on The WB and The CW.
Document 4: Gilmore Girls: Gilmore Girls is an American comedy-drama television series, created by Amy Sherman-Palladino and starring Lauren Graham and Alexis Bledel. The show debuted on October 5, 2000 on The WB and became a flagship series for the network. "Gilmore Girls" originally ran for seven seasons, with the final season moving to The CW, and ended its run on May 15, 2007.
Document 5: History (theatrical genre): History is one of the three main genres in Western theatre alongside tragedy and comedy, although it originated, in its modern form, thousands of years later than the other primary genres. For this reason, it is often treated as a subset of tragedy. A play in this genre is known as a history play and is based on a historical narrative, often set in the medieval or early modern past. History emerged as a distinct genre from tragedy in Renaissance England. The best known examples of the genre are the history plays written by William Shakespeare, whose plays still serve to define the genre. History plays also appear elsewhere in British and Western literature, such as Thomas Heywood's "Edward IV", Schiller's "Mary Stuart" or the Dutch genre "Gijsbrecht van Aemstel".
Document 6: Lorelai Gilmore: Lorelai Victoria Gilmore is a fictional character in the WB/CW television series "Gilmore Girls", portrayed by actress Lauren Graham. She is a key character throughout the series' seven-year run from October 2000 until May 2007, and the 2016 revival "". Lorelai is a single mother of a teenage daughter, Rory (Alexis Bledel). The dynamic of single parenthood and the tension between Lorelai and her wealthy parents, Richard (Edward Herrmann) and especially her controlling mother, Emily (Kelly Bishop), form the main theme of the series story line. Subplots involve various financial difficulties, love interests and other domestic entanglements for both Lorelai and her daughter Rory.
Document 7: Revenge play: The revenge tragedy, or revenge play, is a dramatic genre in which the protagonist seeks revenge for an imagined or actual injury. The term, revenge tragedy, was first introduced in 1900 by A.H. Thorndike to label a class of plays written in the late Elizabethan and early Jacobean eras (circa 1580s to 1620s).
Document 8: Tragic hero: A tragic hero is the protagonist of a tragedy in drama. In his "Poetics", Aristotle records the descriptions of the tragic hero to the playwright and strictly defines the place that the tragic hero must play and the kind of man he must be. Aristotle based his observations on previous dramas. Many of the most famous instances of tragic heroes appear in Greek literature, most notably the works of Sophocles and Euripides.
Document 9: Wedding Bell Blues (Gilmore Girls): "Wedding Bell Blues" is the thirteenth episode of the fifth season of the American comedy-drama series "Gilmore Girls" and the show's 100th episode overall. Written and directed by series creator Amy Sherman-Palladino, the episode was originally broadcast on The WB in the United States on February 8, 2005. The episode features the renewal of vows by Emily (Kelly Bishop) and Richard Gilmore (Edward Herrmann). Their daughter Lorelai Gilmore (Lauren Graham) and their granddaughter Rory Gilmore (Alexis Bledel) serve as maid of honor and best man, respectively. "Wedding Bell Blues" received positive reviews from television critics.
Document 10: Tragedy: Tragedy (from the Greek: τραγῳδία , "tragōidia" ) is a form of drama based on human suffering that invokes an accompanying catharsis or pleasure in audiences. While many cultures have developed forms that provoke this paradoxical response, the term "tragedy" often refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of Western civilisation. That tradition has been multiple and discontinuous, yet the term has often been used to invoke a powerful effect of cultural identity and historical continuity—"the Greeks and the Elizabethans, in one cultural form; Hellenes and Christians, in a common activity," as Raymond Williams puts it.
Document 11: Shakespearean tragedy: Shakespearean tragedy is the designation given to most tragedies written by playwright William Shakespeare. Many of his history plays share the qualifiers of a Shakespearean tragedy, but because they are based on real figures throughout the History of England, they were classified as "histories" in the First Folio. The Roman tragedies—"Julius Caesar", "Antony and Cleopatra" and "Coriolanus"—are also based on historical figures, but because their source stories were foreign and ancient they are almost always classified as tragedies rather than histories. Shakespeare's romances (tragicomic plays) were written late in his career and published originally as either tragedy or comedy. They share some elements of tragedy featuring a high status central character but end happily like Shakespearean comedies. Several hundred years after Shakespeare's death, scholar F.S. Boas also coined a fifth category, the "problem play," for plays that don't fit neatly into a single classification because of their subject matter, setting, or ending. The classifications of certain Shakespeare plays are still debated among scholars.
Document 12: Revenge tragedy: Revenge tragedy (less commonly referred to as revenge drama, revenge play, or tragedy of blood) defines a genre of plays made popular in early modern England. Ashley H. Thorndike formally established this genre in his seminal 1902 article "The Relations of Hamlet to Contemporary Revenge Plays," which characterizes revenge tragedy "as a tragedy whose leading motive is revenge and whose main action deals with the progress of this revenge, leading to the death of the murderers and often the death of the avenger himself." Thomas Kyd's "The Spanish Tragedy" (c.1580s) is often considered the inaugural revenge tragedy on the early modern stage. However, more recent research extends early modern revenge tragedy to the 1560s with poet and classicist Jasper Heywood's translations of Seneca at Oxford University, including "Troas" (1559), "Thyestes" (1560), and "Hercules Furens" (1561). Additionally, Thomases Norton and Sackville's play "Gorbuduc" (1561) is considered an early revenge tragedy (almost twenty years prior to "The Spanish Tragedy"). Other well-known revenge tragedies include William Shakespeare's "Hamlet" (c.1599-1602) and "Titus Andronicus" (c.1588-1593) and Thomas Middleton's "The Revenger's Tragedy" (c.1606).
Document 13: Theatre of ancient Greece: The ancient Greek drama was a theatrical culture that flourished in ancient Greece from c. 700 BC. The city-state of Athens, which became a significant cultural, political, and military power during this period, was its center, where it was institutionalised as part of a festival called the Dionysia, which honoured the god Dionysus. Tragedy (late 500 BC), comedy (490 BC), and the satyr play were the three dramatic genres to emerge there. Athens exported the festival to its numerous colonies and allies in order to promote a common cultural identity.
Document 14: Emily Gilmore: Emily Gilmore is a fictional character who appears in the American comedy-drama television series "Gilmore Girls" (2000 – 2007) and its revival "" (2016) as the matriarch of the eponymous Gilmore family. Portrayed by actress Kelly Bishop, the character was created by series creator Amy Sherman-Palladino in order to add a more tragic element to the show's comedic nature. Emily has had a complicated relationship with her daughter Lorelai ever since the character runs away from home upon giving birth to her daughter Rory at age 16. They remain estranged for several years until Lorelai asks her parents to help pay for Rory's schooling, to which Emily agrees on the condition that her daughter and granddaughter visit her and her husband Richard for dinner every Friday evening.
Document 15: Rory Gilmore: Lorelai Leigh "Rory" Gilmore is a fictional character from the WB/CW television series "Gilmore Girls" played by Alexis Bledel. She first appeared in the pilot episode of the series on October 5, 2000 and appeared in every episode until the series finale on May 15, 2007. Bledel's performance throughout the series' run earned her a Young Artist Award, a Family Television Award and two Teen Choice Awards. She also received nominations for an ALMA Award, a Satellite Award, and a Saturn Award.
ground_truth: Tragedy