Problem: Background: Fazlur Rahman Khan (Bengali: phjlur rhmaan khaan, Fozlur Rohman Khan) (3 April 1929 - 27 March 1982) was a Bangladeshi-American structural engineer and architect, who initiated important structural systems for skyscrapers. Considered the "father of tubular designs" for high-rises, Khan was also a pioneer in computer-aided design (CAD). He was the designer of the Sears Tower, since renamed Willis Tower, the tallest building in the world from 1973 until 1998, and the 100-story John Hancock Center. Khan, more than any other individual, ushered in a renaissance in skyscraper construction during the second half of the 20th century.
Context: Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings, including the framed tube, trussed tube, and bundled tube variants. His "tube concept", using all the exterior wall perimeter structure of a building to simulate a thin-walled tube, revolutionized tall building design. Most buildings over 40 stories constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.  Lateral loads (horizontal forces) such as wind forces, seismic forces, etc., begin to dominate the structural system and take on increasing importance in the overall building system as the building height increases. Wind forces become very substantial, and forces caused by earthquakes, etc. are important as well. The tubular designs resist such forces for tall buildings. Tube structures are stiff and have significant advantages over other framing systems. They not only make the buildings structurally stronger and more efficient, but also significantly reduce the structural material requirements. The reduction of material makes the buildings economically more efficient and reduces environmental impact. The tubular designs enable buildings to reach even greater heights. Tubular systems allow greater interior space and further enable buildings to take on various shapes, offering added freedom to architects. These new designs opened an economic door for contractors, engineers, architects, and investors, providing vast amounts of real estate space on minimal plots of land. Khan was among a group of engineers who encouraged a rebirth in skyscraper construction after a hiatus of over thirty years.  The tubular systems have yet to reach their limit when it comes to height. Another important feature of the tubular systems is that buildings can be constructed using steel or reinforced concrete, or a composite of the two, to reach greater heights. Khan pioneered the use of lightweight concrete for high-rise buildings, at a time when reinforced concrete was used for mostly low-rise construction of only a few stories in height. Most of Khan's designs were conceived considering pre-fabrication and repetition of components so projects could be quickly built with minimal errors.  The population explosion, starting with the baby boom of the 1950s, created widespread concern about the amount of available living space, which Khan solved by building upward. More than any other 20th-century engineer, Fazlur Rahman Khan made it possible for people to live and work in "cities in the sky." Mark Sarkisian (Director of Structural and Seismic Engineering at Skidmore, Owings & Merrill) said, "Khan was a visionary who transformed skyscrapers into sky cities while staying firmly grounded in the fundamentals of engineering."
Question: What was the tube structural system?
Answer: His "tube concept", using all the exterior wall perimeter structure of a building to simulate a thin-walled tube, revolutionized tall building design.

Problem: Background: , Malcolm Denzil Marshall (18 April 1958 - 4 November 1999) was a West Indian cricketer. Primarily a fast bowler, Marshall is regarded as one of the finest and fastest pacemen ever to have played Test cricket. His Test bowling average of 20.94 is the best of anyone who has taken 200 or more wickets. He achieved his bowling success despite being, by the standards of other fast bowlers, a short man - he stood at 5 feet 11 inches (1.80 m), while most of the great quicks have been well above 6 feet (1.8 m) and many great West Indian fast bowlers, such as Joel Garner, Curtly Ambrose and Courtney Walsh, were 6 feet 6 inches (1.98 m) or above.
Context: Marshall made his Test debut in the Second Test at Bangalore on 15 December 1978. He immediately developed a career-long antipathy to Dilip Vengsarkar due to his aggressive appealing. Despite doing little of note in the three Tests he played on that tour, he did take 37 wickets in all first-class games, and Hampshire saw enough in him to take him on as their overseas player for 1979, remaining with the county until 1993. He was in West Indies' World Cup squad, but did not play a match in the tournament. Hampshire were not doing well at the time, but nevertheless he took 47 first-class wickets, as well as picking up 5-13 against Glamorgan in the John Player League.  Marshall came to prominence in 1980, when in the third Test at Old Trafford he accounted for Mike Gatting, Brian Rose and Peter Willey in short order to spark an England collapse, although the match was eventually drawn despite Marshall taking 7-24. After 1980/81 he was out of the Test side for two years, but an excellent 1982 season when he took 134 wickets at under 16 apiece, including a career-best 8-71 against Worcestershire, saw him recalled and thereafter he remained a fixture until the end of his international career.  In seven successive Test series from 1982/83 to 1985/86 he took 21 or more wickets each time, in the last five of them averaging under 20. His most productive series in this period was the 1983/84 rubber against India, when he claimed 33 wickets as well as averaging 34 with the bat and making his highest Test score of 92 at Kanpur. A few months later he took five in an innings twice at home against Australia. At the peak of his career, he turned down an offer of US$1 million to join a rebel West Indies team on a tour to South Africa, still suffering international sporting isolation due to apartheid.
Question: What was his first big success?
Answer:
but an excellent 1982 season when he took 134 wickets at under 16 apiece, including a career-best 8-71 against Worcestershire,