Background: Monroe was born on his family's farm near Rosine, Kentucky, the youngest of eight children of James Buchanan "Buck" and Malissa (Vandiver) Monroe. His mother and her brother, Pendleton "Pen" Vandiver, were both musically talented, and Monroe and his family grew up playing and singing at home. Bill was of Scottish heritage. Because his older brothers Birch and Charlie already played the fiddle and guitar, Bill Monroe was resigned to playing the less desirable mandolin.
Context: Monroe's fortunes began to improve during the "folk revival" of the early 1960s. Many college students and other young people were beginning to discover Monroe, associating his style more with traditional folk music than with the country-and-western genre with which it had previously been identified. The word "bluegrass" first appeared around this time to describe the sound of Monroe and similar artists such as Flatt and Scruggs, the Stanley Brothers, Reno and Smiley, Jim and Jesse, and the Osborne Brothers. While Flatt and Scruggs immediately recognized the potential for a lucrative new audience in cities and on college campuses in the North, Monroe was slower to respond. Under the influence of Ralph Rinzler, a young musician and folklorist from New Jersey who briefly became Monroe's manager in 1963, Monroe gradually expanded his geographic reach beyond the traditional southern country music circuit. Rinzler was also responsible for a lengthy profile and interview in the influential folk music magazine Sing Out! that first publicly referred to Monroe as the "father" of bluegrass. Accordingly, at the first bluegrass festival organized by Carlton Haney at Roanoke, Virginia in 1965, Bill Monroe was the central figure. The growing national popularity of Monroe's music during the 1960s was also apparent in the increasingly diverse background of musicians recruited into his band. Non-southerners who served as Blue Grass Boys during this period included banjo player Bill Keith and singer/guitarist Peter Rowan from Massachusetts, fiddler Gene Lowinger from New York, banjo player Lamar Grier from Maryland, banjo player Steve Arkin from New York, and singer/guitarist Roland White and fiddler Richard Greene from California.
Question: What is the most interesting thing in the article?
Answer: The word "bluegrass" first appeared around this time to describe the sound of Monroe and similar artists

Background: P.M. Dawn was an American hip hop act, formed in 1988 by the brothers Attrell Cordes (known by his stage name Prince Be, sometimes credited as Prince Be the Nocturnal) and Jarrett Cordes (known as DJ Minutemix) in Jersey City, New Jersey. They earned significant crossover success in the early 1990s with music that merged hip hop, older soul, and more pop-oriented urban R&B. After recording their debut single "Ode to a Forgetful Mind" in 1988, P.M. Dawn released their first album Of the Heart, of the Soul and of the Cross: The Utopian Experience in 1991 to critical acclaim.
Context: Of the Heart, of the Soul and of the Cross featured the international hit "Set Adrift on Memory Bliss", which sampled the Spandau Ballet song "True", and featured a cameo by Spandau Ballet singer Tony Hadley in the music video of the song. "Set Adrift on Memory Bliss" hit #1 the week of November 30, 1991, and holds the distinction of being the first #1 song on the Billboard Hot 100 chart following the introduction of Nielsen SoundScan to the chart. The song also reached #3 in the United Kingdom. "Paper Doll", which was one of the early singles Island released in the United Kingdom, was released in the US as a follow-up to "Set Adrift on Memory Bliss", and peaked at #28 in early 1992. "Paper Doll" is said well over 100 times in the song, which makes it second only to MC Hammer's "Pray", which holds the record for the most times a title is repeated in a US Top 40 hit (147). With the success of their debut album, the band parted company with their manager Nick Hemmings and embarked on a world tour. During this world tour, Prince Be gave an interview to Details magazine in which he expressed skepticism of rapper KRS-One's activism: "KRS-One wants to be a teacher, but a teacher of what?" KRS-One and his crew, Boogie Down Productions, responded by storming a P.M. Dawn concert, forcing the group off the stage and performing their songs "I'm Still #1" and "The Bridge Is Over". Defending his actions to USA Today's James T. Jones IV, KRS-One remarked, "I answered his question. 'A teacher of what?' I'm a teacher of respect." In 1992, P.M. Dawn appeared on the Red Hot Organization's compilation CD Red Hot + Dance, contributing the Richie Rich Mix of "Set Adrift on Memory Bliss". The album, featuring George Michael and Madonna among others, was meant to raise money and awareness in support of the AIDS epidemic.
Question: What happened after the world tour?
Answer: Prince Be gave an interview to Details magazine in which he expressed skepticism of rapper KRS-One's activism: "

Background: Jonas Edward Salk (; October 28, 1914 - June 23, 1995) was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicine, later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a physician scientist at Mount Sinai Hospital.
Context: In 1947, Salk became ambitious for his own lab and was granted one at the University of Pittsburgh, but the lab was smaller than he had hoped and he found the rules imposed by the university restrictive. In 1948, Harry Weaver, the director of research at the National Foundation for Infantile Paralysis, contacted Salk. He asked Salk to find out if there were more types of polio than the three then known, offering additional space, equipment and researchers. For the first year he gathered supplies and researchers including Julius Youngner, Byron Bennett, L. James Lewis, and secretary Lorraine Friedman joined Salk's team, as well. As time went on, Salk began securing grants from the Mellon family and was able to build a working virology laboratory. He later joined the National Foundation for Infantile Paralysis's polio project established by President Franklin D. Roosevelt. Extensive publicity and fear of polio led to much increased funding, $67 million by 1955, but research continued on dangerous live vaccines. Salk decided to use the safer 'killed' virus, instead of weakened forms of strains of polio viruses like the ones used contemporarily by Albert Sabin, who was developing an oral vaccine. After successful tests on laboratory animals, on July 2, 1952, assisted by the staff at the D.T. Watson Home for Crippled Children, Salk injected 43 children with his killed-virus vaccine. A few weeks later, Salk injected children at the Polk State School for the retarded and feeble-minded. In 1954 he tested the vaccine on about one million children, known as the polio pioneers. The vaccine was announced as safe on April 12, 1955. The project became large, involving 100 million contributors to the March of Dimes, and 7 million volunteers. The foundation allowed itself to go into debt to finance the final research required to develop the Salk vaccine. Salk worked incessantly for two and a half years. Salk's inactivated polio vaccine was the first vaccine for the disease; it came into use in 1955. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.
Question: What day did the vaccine get used?
Answer:
In 1954 he tested the vaccine on about one million children, known as the polio pioneers.