Problem: Isabella I (Spanish: Isabel, 22 April 1451 - 26 November 1504) reigned as Queen of Castile from 1474 until her death. Her marriage to Ferdinand II of Aragon became the basis for the political unification of Spain under their grandson, Charles I. After a struggle to claim her right to the throne, she reorganized the governmental system, brought the crime rate to the lowest it had been in years, and unburdened the kingdom of the enormous debt her brother had left behind.

Isabella received the title of Catholic Monarch by Pope Alexander VI, a pope of whose behavior and involvement in matters Isabella did not approve. Along with the physical unification of Spain, Isabella and Ferdinand embarked on a process of spiritual unification, trying to bring the country under one faith (Roman Catholicism). As part of this process, the Inquisition became institutionalised. After a Muslim uprising in 1499, and further troubles thereafter, the Treaty of Granada was broken in 1502, and Muslims were ordered to either become Christians or to leave. Isabella's confessor, Cisneros, was named Archbishop of Toledo. He was instrumental in a program of rehabilitation of the religious institutions of Spain, laying the groundwork for the later Counter-Reformation. As Chancellor, he exerted more and more power.  Isabella and her husband had created an empire and in later years were consumed with administration and politics; they were concerned with the succession and worked to link the Spanish crown to the other rulers in Europe. By early 1497, all the pieces seemed to be in place: The son and heir John, Prince of Asturias, married a Habsburg princess, Margaret of Austria, establishing the connection to the Habsburgs. The eldest daughter, Isabella of Aragon, married King Manuel I of Portugal, and the younger daughter, Joanna of Castile, was married to a Habsburg prince, Philip I of Habsburg.  However, Isabella's plans for her eldest two children did not work out. Her only son, John of Asturias, died shortly after his marriage. Her daughter Isabella of Aragon, whose son Miguel da Paz died at the age of two, died in childbirth. Queen Isabella I's crowns passed to her third child Joanna and her son-in-law, Philip I.  Isabella did, however, make successful dynastic matches for her three youngest daughters. The death of Isabella of Aragon created a necessity for Manuel I of Portugal to remarry, and Isabella's third daughter, Maria of Aragon, became his next bride. Isabella's youngest daughter, Catherine of Aragon, married England's Arthur, Prince of Wales, but his early death resulted in her being married to his younger brother, King Henry VIII of England.  Isabella officially withdrew from governmental affairs on September 14, 1504 and she died that same year on 26 November at the Medina del Campo Royal Palace. It is said that she had truly already been in decline since the death of her son Prince John of Asturias in 1497. She is entombed in Granada in the Capilla Real, which was built by her grandson, Charles V, Holy Roman Emperor (Carlos I of Spain), alongside her husband Ferdinand, her daughter Joanna and Joanna's husband Philip I; and Isabella's 2-year-old grandson, Miguel da Paz (the son of Isabella's daughter, also named Isabella, and King Manuel I of Portugal). The museum next to the Capilla Real holds her crown and scepter.

How long did she stay

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Question:
Henry John Deutschendorf Jr. (December 31, 1943 - October 12, 1997), known professionally as John Denver, was an American singer-songwriter, record producer, actor, activist, and humanitarian, whose greatest commercial success was as a solo singer. After traveling and living in numerous locations while growing up in his military family, Denver began his music career with folk music groups during the late 1960s. Starting in the 1970s, he was one of the most popular acoustic artists of the decade and one of its best-selling artists. By 1974, he was firmly established as one of America's best-selling performers, and AllMusic has described Denver as "among the most beloved entertainers of his era".
Denver's first marriage was to Anne Martell of St. Peter, Minnesota. She was the subject of his hit "Annie's Song," which he composed in only ten minutes as he sat on a Colorado ski lift after the couple had an argument. They lived in Edina, Minnesota, from 1968 to 1971. Following the success of "Rocky Mountain High," inspired by a camping trip with Anne and some friends, Denver purchased a residence in Aspen, Colorado. He lived in Aspen continuously until his death. The Denvers adopted a boy, Zachary John, and girl, Anna Kate, who Denver would say were "meant to be" theirs. Denver once said, "I'll tell you the best thing about me. I'm some guy's dad; I'm some little gal's dad. When I die, Zachary John and Anna Kate's father, boy, that's enough for me to be remembered by. That's more than enough."  Zachary, who is African-American, was the subject of "A Baby Just Like You," a song that included the line "Merry Christmas, little Zachary" and which he wrote for Frank Sinatra. Denver and Martell divorced in 1982. In a 1983 interview shown in the documentary John Denver: Country Boy (2013), Denver said that career demands drove them apart; Anne said that they were too young and immature to deal with John's sudden mega-success. The ensuing property settlement caused Denver to become so enraged, he nearly choked Martell, then used a chainsaw to cut their marital bed in half.  Denver married Australian actress Cassandra Delaney in 1988, after a two-year courtship. Settling at Denver's home in Aspen, the couple had a daughter, Jesse Belle. Denver and Delaney separated in 1991 and divorced in 1993. Of his second marriage, Denver would later recall that "before our short-lived marriage ended in divorce, she managed to make a fool of me from one end of the valley to the other".  In 1993, Denver pleaded guilty to a drunken driving charge, and was placed on probation. In August 1994, while still on probation, he was again charged with misdemeanor driving under the influence after crashing his Porsche into a tree in Aspen. Though a jury trial in July 1997 resulted in a hung jury on the second DUI charge, prosecutors later decided to reopen the case, which was closed only after Denver's accidental death in October 1997. In 1996, the FAA decided that Denver could no longer fly a plane, due to medical disqualification for failure to abstain from alcohol, a condition that the FAA had imposed in October 1995 after his prior drunk-driving conviction.  Denver's talent extended beyond music. Artistic interests included painting, but because of his limiting schedule he pursued photography, saying once "photography is a way to communicate a feeling". Denver was also an avid skier and golfer, but his principal interest was in flying. His love of flying was second only to his love of music. In 1974, he bought a Learjet to fly himself to concerts. He was a collector of vintage biplanes, and owned a Christen Eagle aerobatic plane, two Cessna 210 airplanes, and in 1997, an experimental, amateur-built Rutan Long-EZ.
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How long did the marriage last or are they still together?

Answer:
Denver and Delaney separated in 1991 and divorced in 1993. Of his second marriage,