Problem: Bjorn Borg was born in Stockholm, Sweden, on 6 June 1956, as the only child of Rune and Margaretha Borg. He grew up in nearby Sodertalje. As a child, Borg became fascinated with a golden tennis racket that his father won at a table-tennis tournament. His father gave him the racket, beginning his tennis career.

Borg had one of the most distinctive playing styles in the Open Era. He played from the baseline, with powerful ground-strokes. His highly unorthodox backhand involved taking his racket back with both hands but actually generating his power with his dominant right hand, letting go of the grip with his left hand around point of contact, and following through with his swing as a one-hander. He hit the ball hard and high from the back of the court and brought it down with considerable topspin, which made his ground strokes very consistent. There had been other players, particularly Rod Laver and Arthur Ashe, who played with topspin on both the forehand and backhand, yet Laver and Ashe used topspin only as a way to mix up their shots to pass their opponents at the net easily. Borg was one of the first top players to use heavy topspin on his shots consistently.  Complementing his consistent ground-strokes was his fitness. Both of these factors allowed Borg to be dominant at the French Open.  One of the factors that made Borg unique was his dominance on the grass courts of Wimbledon, where baseliners since World War II did not usually succeed. Some experts attributed his dominance on this surface to his consistency, an underrated serve, equally underrated volleys, and his adaptation to grass courts. Against the best players, he almost always served-and-volleyed on his first serves (but he naturally played from the baseline after his second serves).  Another trait usually associated with Borg is his grace under pressure. His calm court demeanor earned him the nickname of the "Ice Man" or "Ice-Borg."  Borg's physical conditioning was legendary and unrivalled. He could outlast most of his opponents under the most grueling conditions. Contrary to popular belief, however, this wasn't due to his exceptionally low resting heart rate, often reported to be near 35 beats per minute. In his introduction to Borg's autobiography My Life and Game, Eugene Scott relates that this rumor arose from a medical exam the 18-year-old Borg once took for military service, where his pulse was recorded as 38. Scott goes on to reveal Borg's true pulse rate as "about 50 when he wakes up and around 60 in the afternoon." Borg is credited with helping to develop the style of play that has come to dominate the game today.

What was the playing stype of Borg

Answer with quotes: He played from the baseline, with powerful ground-strokes.


Problem: Paul Warfield Tibbets Jr. was born in Quincy, Illinois, on 23 February 1915, the son of Paul Warfield Tibbets Sr. and his wife, Enola Gay Tibbets. When he was five years old the family moved to Davenport, Iowa, and then to Iowa's capital, Des Moines, where he was raised, and where his father became a confections wholesaler. When he was eight, his family moved to Hialeah, Florida, to escape from harsh midwestern winters. As a boy he was very interested in flying.

The 509th Composite Group returned to the United States on 6 November 1945, and was stationed at Roswell Army Airfield, New Mexico. Colonel William H. Blanchard replaced Tibbets as group commander on 22 January 1946, and also became the first commander of the 509th Bombardment Wing, the successor to the 509th Composite Group. Tibbets was a technical advisor to the 1946 Operation Crossroads nuclear tests at Bikini Atoll in the Pacific, but he and his Enola Gay crew were not chosen to drop another atomic bomb.  Tibbets then attended the Air Command and Staff School at Maxwell Air Force Base, Alabama. On graduating in 1947 he was posted to the Directorate of Requirements at Air Force Headquarters at the Pentagon. When the head of the directorate, Brigadier General Thomas S. Power, was posted to London as air attache, he was replaced by Brigadier General Carl Brandt. Brandt appointed Tibbets as director of Directorate of Requirements's Strategic Air Division, which was responsible for drawing up requirements for future bombers. Tibbets was convinced that the bombers of the future would be jet aircraft and thus became involved in the Boeing B-47 Stratojet program. He subsequently served as B-47 project officer at Boeing in Wichita from July 1950 until February 1952. He then became commander of the Proof Test Division at Eglin Air Force Base in Valparaiso, Florida, where flight testing of the B-47 was conducted.  Tibbets returned to Maxwell Air Force Base, where he attended the Air War College. After he graduated in June 1955, he became Director of War Plans at the Allied Air Forces in Central Europe Headquarters at Fontainebleau, France. He left Lucy and his sons behind in Alabama, and he and Lucy divorced that year. During his posting to France, he met a French divorcee named Andrea Quattrehomme, who became his second wife. He returned to the United States in February 1956 to command the 308th Bombardment Wing at Hunter Air Force Base, Georgia, and married her in the base chapel on 4 May 1956. They had a son, James Tibbets.  In January 1958, Tibbets became commander of the 6th Air Division at MacDill Air Force Base, Florida. and was promoted to brigadier general in 1959. This was followed by another tour of duty at the Pentagon as director of Management Analysis. In July 1962, he was assigned to the Joint Chiefs of Staff as deputy director for operations, and then, in June 1963, as deputy director for the National Military Command System. In 1964, Tibbets was named military attache in India. He spent 22 months there on this posting, which ended in June 1966. He retired from the United States Air Force (USAF) on 31 August 1966.

how long did he stay there?

Answer with quotes:
Brandt appointed Tibbets as director of Directorate of Requirements's Strategic Air Division, which was responsible for drawing up requirements for future bombers.