In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
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Question: Passage: In 2007, Elderly sold more than 16,000 instruments. The company is a dealer of Martin guitars, as well as other mainstream brands such as Guild and Fender. It sells used Gibson instruments, but not new models as a result of the Gibson lawsuit. Although the bulk of its business comes from guitar sales, the company carries a range of other instruments, such as banjos, ukuleles, mandolins, accordions, concertinas, bouzoukis, sitars, musical saws, and African thumb pianos. Some of the rarer instruments are purchased as collectibles. Elderly is an exclusive retailer of "LunchBox-A-LeLes", ukuleles made from various tin lunch box designs. The journal Bluegrass Unlimited has noted Elderly Instruments for carrying "elite" brands of instruments, such as Paul Duff mandolins, Huss & Dalton acoustic guitars, Stelling banjos, and Nash electric guitars. Elderly was once one of only two American retailers for Apitius Mandolins, now only sold directly. As part of its consignment business, Elderly sells "collections" of instruments that sometimes have rich histories. In September 2006, it placed the Dopyera family's personal collection of resonator instruments up for sale, including some of the Dobro and National brands. The Dopyera family was responsible for founding those companies and innovating the resonator instrument trade.Elderly Instruments carries a number of Martin guitars, including valuable vintage models. In interviews, Werbin frequently mentions Martins made before World War II as especially desirable and "memorable" pieces of the Elderly Instruments inventory. The guitars are sought after by musicians from the bluegrass and other genres. Werbin purchases some of the more valuable or interesting instruments for his personal collection, and has lent them to museums as temporary exhibits.Periodicals for the bluegrass genre such as Bluegrass Canada and Bluegrass Now have featured stories about Elderly and its selection of bluegrass instruments and repair services. Elderly employees maintain connections with the bluegrass industry by attending trade shows such as the International Bluegrass Association Trade Show in Louisville, Kentucky. At these shows, Elderly showcases typical bluegrass instruments, such as banjos, guitars, mandolins, fiddles and resophonic guitars, to musicians and businesspeople. Elderly Instruments staff members have set up organizations such as the "Friends of Bluegrass" to support local bluegrass musicians.Michigan Living magazine noted Elderly's liberal policy regarding the handling of instruments, something Werbin attributes to his difficulty shopping for Martin guitars in New York City in the 1960s. The magazine also notes that customers are encouraged to pick up and play any instrument, an unusual policy for a high-end instrument retailer. Impromptu "jam sessions" are frequent in the store, as customers try out guitars.

Answer: What is the name of the organization set up to support bluegrass musicians by the employees of the company that sold over 16,000 instruments in 2007?

Question: Passage: Ravel was not by inclination a teacher, but he gave lessons to a few young musicians he felt could benefit from them. Manuel Rosenthal was one, and records that Ravel was a very demanding teacher when he thought his pupil had talent. Like his own teacher, Faure, he was concerned that his pupils should find their own individual voices and not be excessively influenced by established masters. He warned Rosenthal that it was impossible to learn from studying Debussy's music: "Only Debussy could have written it and made it sound like only Debussy can sound." When George Gershwin asked him for lessons in the 1920s, Ravel, after serious consideration, refused, on the grounds that they "would probably cause him to write bad Ravel and lose his great gift of melody and spontaneity". The best known composer who studied with Ravel was probably Ralph Vaughan Williams, who was his pupil for three months in 190708. Vaughan Williams recalled that Ravel helped him escape from "the heavy contrapuntal Teutonic manner ... Complexe mais pas complique was his motto."Vaughan Williams's recollections throw some light on Ravel's private life, about which the latter's reserved and secretive personality has led to much speculation. Vaughan Williams, Rosenthal and Marguerite Long have all recorded that Ravel frequented brothels. Long attributed this to his self-consciousness about his diminutive stature, and consequent lack of confidence with women. By other accounts, none of them first-hand, Ravel was in love with Misia Edwards, or wanted to marry the violinist Helene Jourdan-Morhange. Rosenthal records and discounts contemporary speculation that Ravel, a lifelong bachelor, may have been homosexual. Such speculation recurred in a 2000 life of Ravel by Benjamin Ivry; subsequent studies have concluded that Ravel's sexuality and personal life remain a mystery.Ravel's first concert outside France was in 1909. As the guest of the Vaughan Williamses, he visited London, where he played for the Societe des Concerts Francais, gaining favourable reviews and enhancing his growing international reputation.

Answer: What was the name of the person that Faure taught?

Question: Passage: Sawtooth National Forest is managed by the U.S. Forest Service, an agency within the Department of Agriculture, as four units: the Fairfield (420,720 acres or 170,260 hectares), Ketchum (321,544 acres or 130,124 hectares), and Minidoka (604,108 acres or 244,474 hectares) Ranger Districts and Sawtooth National Recreation Area (SNRA). The forest's headquarters are in Jerome, where they moved to in 2018 after 32 years of being headquartered in Twin Falls. The Minidoka Ranger District is separated into the Albion (95,000 acres or 38,000 hectares), Black Pine (90,000 acres or 36,000 hectares), Cassia (234,000 acres or 95,000 hectares), Raft River (95,000 acres or 38,000 hectares), and Sublett (90,000 acres or 36,000 hectares) divisions.Guard stations and work camps dot the forest. The SNRA headquarters and main visitor center are located north of the city of Ketchum, while there is a ranger station in Stanley and visitor center at Redfish Lake. There are more than 25,000 acres (10,000 ha) of private land inholdings within the forest, and it is bordered by the Boise and Salmon-Challis National Forests as well as private, state, and Bureau of Land Management land. Curlew National Grassland is 1.5 mi (2.4 km) from the Sublett Division's eastern boundary. Small portions of the area originally designated as Sawtooth National Forest are managed by the Boise and Challis National Forests, while the Sawtooth manages portions of the Boise and Challis National Forests.Sawtooth National Forest balances interests of different groups, such as those interested in recreation, preservation, or resource extraction. The forest practices conservation of resources, in some areas allowing for production of raw materials, such as lumber for construction purposes and wood pulp for paper products, alongside recreational uses, while in other areas only recreation is permitted. Additionally, mineral extraction through mining and oil and natural gas exploration and recovery are also conducted, though in Sawtooth National Forest this has become less common due to a consensus to protect the natural surroundings. Leases offered to ranchers to allow them to graze cattle and sheep on the forest are common. The forest provides guidelines and enforces environmental regulations to ensure that resources are not overexploited and that necessary commodities are available for future generations.

Answer:
What are the four units of Sawtooth National Forest?