Problem: Background: James Anthony Traficant Jr. (May 8, 1941 - September 27, 2014) was a Democratic, and later independent, politician and member of the United States House of Representatives from Ohio. He represented the 17th Congressional District, which centered on his hometown of Youngstown and included parts of three counties in northeast Ohio's Mahoning Valley. He was expelled from the House after being convicted of taking bribes, filing false tax returns, racketeering and forcing his aides to perform chores at his farm in Ohio and houseboat in Washington, D.C.
Context: Born into a working-class Catholic family in Youngstown, Ohio, Traficant was the son of Agnes (nee Farkas) and James Anthony Traficant Sr. He was of mostly Italian and Slovak ancestry. Traficant graduated from Cardinal Mooney High School in 1959 and the University of Pittsburgh in 1963. He played quarterback for Pitt's football team, and his teammates included Mike Ditka. Traficant was drafted in the NFL's twentieth round (276th overall) by the Pittsburgh Steelers in 1963, and tried out for the Steelers and the Oakland Raiders of the American Football League, but did not play professionally. He later obtained a master's degree from the University of Pittsburgh (1973) and another from Youngstown State University (1976). At the start of his career, Traficant worked as consumer finance director for the Youngstown Community Action Program. He taught courses on drug and alcohol dependency and recovery at Youngstown State University and Kent State University, as well as lecturing on drug and alcohol abuse for colleges and government agencies outside Ohio. In addition, Traficant taught at the Ohio Peace Officer Training Academy. He was the executive director of the Mahoning County Drug Program from 1971 to 1981, and Sheriff of Mahoning County from 1981 to 1985. While serving as sheriff, Traficant made national headlines by refusing to execute foreclosure orders on several unemployed homeowners, many of whom had been left out of work by the recent closures of steel mills. This endeared him to the local population, which was dealing with a declining economy following the closures and relocations of steel making and steel-associated businesses. In 1983, he was charged with racketeering for accepting bribes. Traficant, who represented himself in the criminal trial, argued that he accepted the bribes only as part of his own alleged secret undercover investigation into corruption. Traficant was acquitted of the charges, becoming the only person ever to win a Racketeer Influenced and Corrupt Organizations Act (RICO) case while representing himself. Publicity from the RICO trial increased Traficant's local visibility. He was elected as a Democrat to Congress from Ohio's 17th District, defeating Lyle Williams, a three-term Republican incumbent. He was reelected eight times without serious opposition.
Question: what did his parents do?
Answer: working-class Catholic family

Problem: Background: Slotin was the first of three children born to Israel and Sonia Slotin, Yiddish-speaking refugees who had fled the pogroms of Russia to Winnipeg, Manitoba. He grew up in the North End neighborhood of Winnipeg, an area with a large concentration of Eastern European immigrants. From his early days at Machray Elementary School through his teenage years at St. John's High School, Slotin was academically exceptional. His younger brother, Sam, later remarked that his brother "had an extreme intensity that enabled him to study long hours."
Context: On 21 May 1946, with seven colleagues watching, Slotin performed an experiment that involved the creation of one of the first steps of a fission reaction by placing two half-spheres of beryllium (a neutron reflector) around a 3.5-inch-diameter (89 mm) plutonium core. The experiment used the same 6.2-kilogram (13.7 lb) plutonium core that had irradiated Harry Daghlian, later called the "demon core" for its role in the two accidents. Slotin grasped the upper 228.6 mm (9-inch) beryllium hemisphere with his left hand through a thumb hole at the top while he maintained the separation of the half-spheres using the blade of a screwdriver with his right hand, having removed the shims normally used. Using a screwdriver was not a normal part of the experimental protocol. At 3:20 p.m., the screwdriver slipped and the upper beryllium hemisphere fell, causing a "prompt critical" reaction and a burst of hard radiation. At the time, the scientists in the room observed the blue glow of air ionization and felt a heat wave. Slotin experienced a sour taste in his mouth and an intense burning sensation in his left hand. He jerked his left hand upward, lifting the upper beryllium hemisphere and dropping it to the floor, ending the reaction. However, he had already been exposed to a lethal dose of neutron radiation. At the time of the accident, dosimetry badges were in a locked box about 100 feet (30 m) from the accident. Realizing that no one in the room had their film badges on, "immediately after the accident Dr. Slotin asked to have the badges taken from the lead box and placed on the critical assembly". This peculiar response was attributed to "vertigo" and was of no value for determining the actual doses received by the men in the room. Others in the room at the time included Raemer E. Schreiber, Alvin Cushman Graves, Stanley Allan Kline, Marion Edward Cieslicki, Dwight Smith Young, Theodore P. Perlman, and Pvt. Patrick J. Cleary. As soon as Slotin left the building, he vomited, a common reaction from exposure to extremely intense ionizing radiation. Slotin's colleagues rushed him to the hospital, but the radiation damage was irreversible. By 25 May 1946, four of the eight men exposed during the incident had been discharged from hospital. The Army doctor responsible for the hospital, Captain Paul Hageman, said that Slotin's, Graves', Kline's and Young's "immediate condition is satisfactory."
Question: What was the critical accident?
Answer:
At 3:20 p.m., the screwdriver slipped and the upper beryllium hemisphere fell, causing a "prompt critical" reaction and a burst of hard radiation.