Problem: Background: Elroy Leon "Crazylegs" Hirsch (June 17, 1923 - January 28, 2004) was an American football player, sport executive and actor. He was inducted into the Pro Football Hall of Fame in 1967 and the College Football Hall of Fame in 1974. He was also named to the all-time All-Pro team selected in 1968 and to the National Football League (NFL) 1950s All-Decade Team. A native of Wausau, Wisconsin, Hirsch played college football as a halfback at the University of Wisconsin and the University of Michigan, helping to lead both the 1942 Badgers and the 1943 Wolverines to No. 3 rankings in the final AP Polls.
Context: In January 1943, Hirsch enlisted in the United States Marine Corps and was transferred to the University of Michigan as part of the V-12 Navy College Training Program. In early September 1943, he broke the record at Michigan's Marine Corps training center, completing a 344-yard obstacle course in one minute and 31 seconds. He was the starting left halfback in the first seven games of the season for Fritz Crisler's 1943 Michigan Wolverines football team that compiled an 8-1 record and was ranked No. 3 in the final AP Poll. After watching Hirsch in pre-season practice, Associated Press football writer Jerry Liska referred to "squirming Elroy Hirsch" as "Wisconsin's gold-plated wartime gift to Michigan." Hirsch and Bill Daley (a V-12 transfer from Minnesota) became Michigan's most powerful offensive weapons during the 1943 season and were dubbed Michigan's "lend-lease backs." In his first game for Michigan, Hirsch returned the opening kickoff 50 yards, scored two touchdowns and intercepted a pass. He scored five touchdowns in Michigan's first three games and threw for a touchdown in the fourth game against Notre Dame. On October 11, 1943, Hirsch scored three touchdowns, including a 61-yard reverse around the right end, and intercepted a pass to help Michigan to its first victory over Minnesota since 1932. Due to a shoulder injury, he appeared only briefly as a backup to kick for extra points in the final two games of the season, but he still led the Wolverines in passing, punt returns, and scoring. During the 1943-1944 academic year, Hirsch also won varsity letters in basketball (as a center), track (as a broad jumper), and baseball (as a pitcher), becoming the first Michigan athlete to letter in four sports in a single year. He averaged 7.3 points per game for the 1943-44 Michigan Wolverines men's basketball team, compiled a 6-0 record as a pitcher for the Michigan baseball team, placed third in the long jump in the 1944 indoor championship, and led all three teams to Big Ten Conference championships. On May 13, 1944, Hirsch starred in two sports in the same day, winning the broad jump with a distance of 24 feet, 2-1/4 inches at a track meet in Ann Arbor, Michigan, and then traveling to Columbus, Ohio, where he pitched a one-hitter to give Michigan's baseball team a 5-0 victory over Ohio State.
Question: Which other sports did he letter in?
Answer: Hirsch also won varsity letters in basketball (as a center), track (as a broad jumper), and baseball (as a pitcher),

Problem: Background: Dame Agatha Mary Clarissa Christie, Lady Mallowan, (nee Miller; 15 September 1890 - 12 January 1976) was an English writer. She is known for her 66 detective novels and 14 short story collections, particularly those revolving around her fictional detectives Hercule Poirot and Miss Marple. Christie also wrote the world's longest-running play, a murder mystery, The Mousetrap, and six romances under the name Mary Westmacott. In 1971 she was appointed a Dame Commander of the Order of the British Empire (DBE) for her contribution to literature.
Context: Christie had long been a fan of detective novels, having enjoyed Wilkie Collins's The Woman in White and The Moonstone, as well as Sir Arthur Conan Doyle's early Sherlock Holmes stories. She wrote her own detective novel, The Mysterious Affair at Styles, featuring Hercule Poirot, a former Belgian police officer noted for his twirly large "magnificent moustaches" and egg-shaped head. Poirot had taken refuge in Britain after Germany invaded Belgium. Christie's inspiration for the character stemmed from real Belgian refugees who were living in Torquay and the Belgian soldiers whom she helped treat as a volunteer nurse in Torquay during the First World War. Agatha began working on The Mysterious Affair at Styles in 1916, writing most of it on Dartmoor. Her original manuscript was rejected by such publishing companies as Hodder and Stoughton and Methuen. After keeping the submission for several months, John Lane at The Bodley Head offered to accept it, provided that Christie change the ending. She did so, and signed a contract which she later felt was exploitative. It was finally published in 1920. Christie, meanwhile, settled into married life, giving birth to her only child, daughter Rosalind Margaret Hicks, in August 1919 at Ashfield, where the couple spent much of their time, having few friends in London. Archie left the Air Force at the end of the war and started working in the City financial sector at a relatively low salary, though they still employed a maid. Christie's second novel, The Secret Adversary (1922), featured a new detective couple Tommy and Tuppence, again published by The Bodley Head. It earned her PS50. A third novel again featured Poirot, Murder on the Links (1923), as did short stories commissioned by Bruce Ingram, editor of The Sketch magazine. In order to tour the world promoting the British Empire Exhibition, the couple left their daughter Rosalind with Agatha's mother and sister. They travelled to South Africa, Australia, New Zealand, and Hawaii. They learned to surf prone in South Africa; then, in Waikiki, they were among the first Britons to surf standing up.
Question: What made them surf standing up?
Answer:
They travelled to South Africa, Australia, New Zealand, and Hawaii. They learned to surf prone in South Africa; then, in Waikiki,