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: Like Green, who made particular mention of Beiderbecke's "amount of teaching," the jazz historian Ted Gioia also has emphasized Beiderbecke's lack of formal instruction, suggesting that it caused him to adopt "an unusual, dry embouchure" and "unconventional fingerings," which he retained for the rest of his life. Gioia points to "a characteristic streak of obstinacy" in Beiderbecke that provokes "this chronic disregard of the tried-and-true." He argues that this stubbornness was behind Beiderbecke's decision not to switch from cornet to trumpet when many other musicians, including Armstrong, did so. In addition, Gioia highlights Beiderbecke's precise timing, relaxed delivery, and pure tone, which contrasted with "the dirty, rough-edged sound" of King Oliver and his protégé Armstrong, whose playing was often more energetic and whose style held more sway early in the 1920s than Beiderbecke's.
Beiderbecke's playing - both as a cornetist and a pianist - had a profound effect on a number of his contemporaries. Eddie Condon, for instance, described Beiderbecke's cornet playing as "like a girl saying yes" and also wrote of being amazed by Beiderbecke's piano playing: "All my life I had been listening to music […] But I had never heard anything remotely like what Beiderbecke played. For the first time I realized music isn't all the same, it had become an entirely new set of sounds" "I tried to explain Bix to the gang," Hoagy Carmichael wrote, but "[i]t was no good, like the telling of a vivid, personal dream […] the emotion couldn't be transmitted."Mezz Mezzrow described Beiderbecke's tone as being "pickled in alcohol […] I have never heard a tone like he got before or since. He played mostly open horn, every note full, big, rich and round, standing out like a pearl, loud but never irritating or jangling, with a powerful drive that few white musicians had in those days."Some critics have highlighted "Jazz Me Blues", recorded with the Wolverines on February 18, 1924, as being particularly important to understanding Beiderbecke's style. Although it was one of his earliest recordings, the hallmarks of his playing are evident. "The overall impression we get from this solo, as in all of Bix at his best," writes the trumpeter Randy Sandke, "is that every note is spontaneous yet inevitable." Richard Hadlock describes Beiderbecke's contribution to "Jazz Me Blues" as "an ordered solo that seems more inspired by clarinetists Larry Shields of the ODJB and Leon Roppolo of the NORK than by other trumpet players." He goes on to suggest that clarinetists, by virtue of their not being tied to the melody as much as cornetists and trumpet players, could explore harmonies.

Answer: What is the first name of the person who highlights Beiderbecke's precise timing, relaxed delivery, and pure tone?


Question: Passage: Eric Stoltz plays John Dantley, an NTSB officer sent to O'Hare Airport in Chicago to investigate a collision between Global Airlines Flight 1025 (a Boeing 757-200 from Los Angeles to Washington D.C.) and PDO Cargo flight 342 (a Boeing 727-200F flying westbound cargo plane), where 185 people are killed.
Charles Martin Smith plays Henry Drake, an air traffic controller who insists his radar system malfunctioned when the planes were being cleared for landing. When the rest of air traffic control dismiss Drake and blame the incident on human error, Dantley must discover the truth about the crash: Was Drake — a high-strung individual who already didn't get along with his co-workers — simply incompetent at his job or did Drake's co-workers and superiors know about and/or had been previously been warned about the aging radar system showing signs of seriously malfunctioning and crashing at critical times (and thus liable to lead to deadly situations such as the one that happened), but instead of taking action ignored the warnings and initiated a cover-up?.

Answer: What were the two flights that an NTSB officer was sent to O'Hare Airport to investigate a collision between?


Question: Passage: Black bears are common in the park and were a park symbol due to visitor interaction with the bears starting in 1910. Feeding and close contact with bears has not been permitted since the 1960s to reduce their desire for human foods. Yellowstone is one of the few places in the United States where black bears can be seen coexisting with grizzly bears. Black bear observations occur most often in the park's northern ranges and in the Bechler area which is in the park's southwestern corner.As of 2017, an estimated 700 grizzly bears were living in the Greater Yellowstone Ecosystem, with about 150 grizzlies living wholly or partially within Yellowstone National Park. The grizzly was initially listed as a threatened species in the contiguous United States on July 28, 1975 by the Fish and Wildlife Service. The grizzly bear was taken off the endangered species list in 2007. Opponents of delisting the grizzly expressed concerns that states might once again allow hunting and that better conservation measures were needed to ensure a sustainable population. A federal district judge overturned the delisting ruling in 2009, reinstating the grizzly; however, the grizzly was once again removed from the list in 2017. In September 2018, a US district judge ruled that the grizzly's protections must be restored in full, arguing the Fish and Wildlife Service was mistaken in removing the bear from the threatened status list. Regardless of the rulings, hunting is prohibited within Yellowstone National Park. Hunters who legally hunt animals outside park boundaries may transport the carcass through the park with a permit.
Population figures for elk are in excess of 30,000—the largest population of any large mammal species in Yellowstone. The northern herd has decreased enormously since the mid‑1990s; this has been attributed to wolf predation and causal effects such as elk using more forested regions to evade predation, consequently making it harder for researchers to accurately count them. The northern herd migrates west into southwestern Montana in the winter. The southern herd migrates southward, and the majority of these elk winter on the National Elk Refuge, immediately southeast of Grand Teton National Park. The southern herd migration is the largest mammalian migration remaining in the U.S. outside of Alaska.

Answer:
What is the full name of the park in which black bears are common and whose symbol they once served as?