Background: John Harvey Kellogg, M.D. (February 26, 1852 - December 14, 1943) was an American medical doctor, nutritionist, inventor, health activist, and businessman. He was the director of the Battle Creek Sanitarium in Battle Creek, Michigan. The sanitarium was founded by members of the Seventh-day Adventist Church. It combined aspects of a European spa, a hydrotherapy institution, a hospital and a high-class hotel.
Context: Although they are less discussed than his food creations, Kellogg designed and improved upon a number of medical devices that were regularly used at the Battle Creek Sanitarium in surgical operations and in treatment modalities falling under the term "physiotherapy". Many of the machines invented by Kellogg were manufactured by the Battle Creek Sanitarium Equipment Company, which was established in 1890. Dr. Kellogg attempted to popularize these treatment methods, including electrotherapy, hydrotherapy, and motor therapy, in his work The Home Handbook of Domestic Hygiene and Rational Medicine, first published in 1881. As he specialized in certain gynecological surgeries (particularly hemorrhoidectomies and ovariotomies) and gastrointestinal surgeries, he developed various instruments for these operations. These included specialized hooks and retractors, a heated operating table, and an aseptic drainage tube used in abdominal surgery. Additionally, Kellogg took keen interest in devising instruments for light therapy, mechanical exercising, proper breathing, and Hydrotherapy. His medical inventions spanned a wide range of applications and included a hot air bath, vibrating chair, oscillomanipulator, window tent for fresh air, pneumograph to graphically represent respiratory habits, loofah mitt, and an apparatus for home sterilization of milk. Some of his inventions were fashionable enough to be included in the first class gymnasium of the RMS Titanic. As in other areas, Dr. Kellogg did not make concerted efforts to profit from his medical inventions. Kellogg's statement in 1916 about his food company sheds light on his general motivations: "I desire to make clear...that the food business I have been carrying on is a part of my general scheme to propagate the ideas of health and biological living. Otherwise, I should not have engaged in it as a commercial enterprise, but I have carried it on as a part of the general philanthropic work in which I was engaged."
Question: What year did he start inventing tools for medical procedures?
Answer: Many of the machines invented by Kellogg were manufactured by the Battle Creek Sanitarium Equipment Company, which was established in 1890.

Background: Nina Simone (; born Eunice Kathleen Waymon; February 21, 1933 - April 21, 2003) was an American singer, songwriter, pianist, arranger, and activist in the Civil Rights Movement. Simone employed a broad range of musical styles including classical, jazz, blues, folk, R&B, gospel, and pop. Born in North Carolina, the sixth child of a preacher, Waymon aspired to be a concert pianist.
Context: Simone was known for her temper and frequent outbursts. Simone abandoned her daughter Lisa Simone Kelly for years in Mount Vernon after relocating to Liberia. When they reunited in West Africa, Simone became abusive. "She went from being my comfort to the monster in my life. Now she was the person doing the beating, and she was beating me." The abuse became so unbearable that Kelly became suicidal and moved back to New York to stay with her father, Andrew Stroud. In 1985, she fired a gun at a record company executive, whom she accused of stealing royalties. Simone said she "tried to kill him" but "missed". In 1995, she shot and wounded her neighbor's son with an air gun after the boy's laughter disturbed her concentration. According to a biographer, Simone took medication for a condition from the mid-1960s on. All this was only known to a small group of intimates, and kept out of public view for many years, until the biography Break Down and Let It All Out written by Sylvia Hampton and David Nathan revealed this in 2004, after her death. Singer-songwriter Janis Ian, a one-time friend of Simone's, related in her own autobiography, Society's Child: My Autobiography, two instances to illustrate Simone's volatility: one incident in which she forced a shoe store cashier, at gunpoint, to take back a pair of sandals she'd already worn; and another in which Simone demanded a royalty payment from Ian herself as an exchange for having recorded one of Ian's songs, and then ripped a pay telephone out of its wall when she was refused.
Question: Why did she fire the gun?
Answer: she accused of stealing royalties.

Background: Eurythmics were a British music duo consisting of members Annie Lennox and David A. Stewart. Stewart and Lennox were both previously in the band The Tourists (originally known as The Catch), who split up in 1980; Eurythmics were formed that year in Wagga Wagga. The duo released their first album, In the Garden, in 1981 to little fanfare, but went on to achieve global success with their second album Sweet Dreams
Context: After strenuous years of touring and recording (Eurythmics had released eight studio albums in eight years), a rift had developed between the duo and Eurythmics disbanded, although no formal notice was given. Stewart began writing film soundtracks and had a big international hit in 1990 with the instrumental track "Lily Was Here" (featuring saxophonist Candy Dulfer). The single reached no.6 in the UK and the Top 20 throughout much of Europe, as well as in Australia and the US. He also formed a band called The Spiritual Cowboys, releasing two albums with this group in the early 1990s. Lennox took time off from her career to have a baby and to consider a life after Eurythmics. Accordingly, the duo had very little communication with each other from 1991 to 1998. In 1991, Eurythmics' Greatest Hits collection was released, entering the UK album chart at No. 1 and spending a total of 10 weeks at that position, as well as becoming a massive worldwide seller. New remixes of "Sweet Dreams" and "Love Is a Stranger" were also released as singles at this time. During 1993, a live album entitled Live 1983-1989 featuring recordings from various years throughout Eurythmics' career was also released. In 1992, Lennox released her first solo album, Diva. The album was a critical and popular success, entering the UK album chart at no.1 and achieving quadruple platinum status (more than any Eurythmics studio album had done), as well as producing a string of five hit singles. She followed this up in 1995 with her second album, Medusa, an album of cover versions. It became her second number one album in the UK, reaching double platinum status both there and in the US. Stewart, meanwhile, released the solo albums Greetings from the Gutter (1995), and Sly-Fi (1998), but neither was commercially successful.
Question: Did he produced any albums?
Answer:
He also formed a band called The Spiritual Cowboys, releasing two albums