Background: Walter Elias Disney (; December 5, 1901 - December 15, 1966) was an American entrepreneur, animator, voice actor and film producer. A pioneer of the American animation industry, he introduced several developments in the production of cartoons.
Context: Disney had been a heavy smoker since World War I. He did not use cigarettes with filters, and had smoked a pipe as a young man. In November 1966, he was diagnosed with lung cancer and was treated with cobalt therapy. On November 30 he felt unwell and was taken to St. Joseph Hospital where, on December 15, ten days after his 65th birthday, he died of circulatory collapse caused by lung cancer. Disney's remains were cremated two days later, and his ashes interred at the Forest Lawn Memorial Park in Glendale, California. His estate included a 14 percent holding in Walt Disney Productions worth $20 million. He left 45 percent of his estate to his wife and children--much in a family trust--and 10 percent to his sister, nieces and nephews. The remaining 45 percent went into a charitable trust, 95 percent of which was designated for CalArts, to build a new campus (a figure of around $15 million); he also donated 38 acres (0.154 km2) of the Golden Oaks ranch in Valencia for construction of that school. The university moved there in November 1971. The release of The Jungle Book and The Happiest Millionaire in 1967 raised the total number of feature films that Disney had been involved in to 81. When Winnie the Pooh and the Blustery Day was released in 1968, it earned Disney an Academy Award in the Short Subject (Cartoon) category, awarded posthumously. After Disney's death, his studios continued to produce live-action films prolifically but largely abandoned animation until the late 1980s, after which there was what The New York Times describes as the "Disney Renaissance" that began with The Little Mermaid (1989). Disney's companies continue to produce successful film, television and stage entertainment. Disney's plans for the futuristic city of EPCOT did not come to fruition. After Disney's death, his brother Roy deferred his retirement to take full control of the Disney companies. He changed the focus of the project from a town to an attraction. At the inauguration in 1971, Roy dedicated Walt Disney World to his brother. Walt Disney World expanded with the opening of Epcot Center in 1982; Walt Disney's vision of a functional city was replaced by a park more akin to a permanent world's fair. In 2009, the Walt Disney Family Museum, designed by Disney's daughter Diane and her son Walter E. D. Miller, opened in the Presidio of San Francisco. Thousands of artifacts from Disney's life and career are on display, including numerous awards that he received. In 2014, the Disney theme parks around the world hosted approximately 134 million visitors. Disney has been portrayed numerous times in fictional works. H. G. Wells references Disney in his 1938 novel The Holy Terror, in which World Dictator Rud fears that Donald Duck is meant to lampoon the dictator. Disney was portrayed by Len Cariou in the 1995 made-for-TV film A Dream Is a Wish Your Heart Makes: The Annette Funicello Story, and by Tom Hanks in the 2013 film Saving Mr. Banks. In 2001, the German author Peter Stephan Jungk published Der Konig von Amerika (trans: The King of America), a fictional work of Disney's later years that re-imagines him as a power-hungry racist. The composer Philip Glass later adapted the book into the opera The Perfect American (2013).
Question: What commenced after his death?
Answer: He left 45 percent of his estate to his wife and children--much in a family trust--and 10 percent to his sister, nieces and nephews.

Background: Celebrity Rehab with Dr. Drew, later called simply Rehab with Dr. Drew, is a reality television show that aired on the cable network VH1 in which many of the episodes chronicle a group of well-known people as they are treated for alcohol and drug addiction by Dr. Drew Pinsky and his staff at the Pasadena Recovery Center in Pasadena, California. The first five seasons of the series, on which Pinsky also serves as executive producer, cast celebrities struggling with addiction, with the first season premiering on January 10, 2008, and the fifth airing in 2011. The sixth season, which filmed in early 2012, featured non-celebrities as treatment subjects, and the series name shortened to Rehab with Dr. Drew. Season 6 premiered on September 16, 2012.
Context: According to a December 2009 New York Times article, Drew Pinsky, who was alarmed by tabloid portrayals of addiction as an indulgence of the rich and famous, and a group of independent producers, approached VH1 with a proposal for a reality television series which would authentically depict addiction, as a sort of media intervention. According to executive producer John Irwin, casting for the first season was the most difficult, as the representatives of the celebrities who had been arrested or had publicized bouts with addiction refused to speak with him and the other producers. The process became easier after the first season aired. Actor Tom Sizemore, for example, who was cast for Season 3, had been sought after since Season 1. Producers have reportedly offered actress Lindsay Lohan six figures to appear on the show. Pinsky, who focuses on the treatment side of the production, is not usually involved with casting, though he reportedly visited Rachel Uchitel personally in order to convince her to join the fourth-season cast. A multitude of cameras are employed, which film twenty-four hours a day, seven days a week, during the 21-day treatment cycle. Because some dramatic incidents occur early in the morning when the camera crews are not present, automated cameras are mounted all over the clinic to capture them. The exception to this are the bathrooms, which nonetheless are equipped with microphones to monitor unusual sounds, such as patients attempting to use drugs. In addition to receiving the free treatment (which would normally be worth approximately US$50,000-60,000), the patients receive a salary for their appearance on the series, which is prorated, and distributed once a week as an incentive to stay. Celebrity Rehab spun off two other shows. The first spinoff is Sober House, which depicts Rehab alumni living for 30 days at a sober living facility, as an interim step for recovering addicts between the completion of rehab and their eventual return to their old life. The second spinoff is Sex Rehab with Dr. Drew, in which Pinsky and his staff treat celebrities for sexual addiction. In May 2013, Pinsky announced that season six was the final season, citing the criticism leveled at him following the relapse and death of cast members, saying, "I'm tired of taking all the heat. It's very stressful and very intense for me. To have people questioning my motives and taking aim at me because people get sick and die because they have a life-threatening disease, and I take the blame? Rodney King has a heart attack and I take blame for that? It's just ridiculous." Pinsky insisted that his practices depicted on the show were the same ones he, Bob Forrest and Shelly Sprague engaged in for decades, with the sole difference being the presence of cameras. Despite his decision not to continue the series, Pinsky stated a number of people achieved sobriety due to Celebrity Rehab who would not have attained it without the show, and cites as the biggest success story Sizemore, who struggled with Pinsky's program for 10 years before finally achieving sobriety after being on the show.
Question: how many seasons was dr. drew on?
Answer:
season six was the final season,