Problem: Background: Thomas Stanley Raymond Hafey (5 August 1931 - 12 May 2014) was an Australian rules football Victorian Football League player and coach. Hafey played for Richmond between 1953 and 1958, and coached four clubs--Richmond, Collingwood, Geelong and Sydney--between 1966 and 1988, leading Richmond to a total of four premierships: 1967, 1969, 1973 and 1974. Hafey was an inaugural inductee into the Australian Football Hall of Fame in 1996, named coach of Richmond's team of the century in 1998, and given the AFL Coaches Association "Coaching Legend Award" in 2011. He was renowned for his fitness and toughness even in his elderly years when he would still run rings around his juniors.
Context: Tom Hafey was born and raised in Richmond. He began his football career with the East Malvern under 19 team before graduating to the senior side in 1950. He spent three years with the club, winning the best and fairest in 1952.  Hafey was then invited to train at Richmond. At the time, the Tigers were in turmoil after legendary coach Jack Dyer quit. In an effort to reinvigorate the team, Richmond recruited a number of highly considered young players, including Ron Branton, Frank Dunin and Brian Davie. However, it was Hafey, an unheralded local, who played twelve of the eighteen matches his first year, scoring eight goals.  The following season was less productive for Hafey as he played just four games due to a bout of hepatitis. He did, however, play back pocket when the reserves captured the premiership by defeating Melbourne in the Grand Final. He was named as one of the Tigers' best performers, and was selected for the senior team for the 1955 and 1956 seasons. In these two years, he played 28 games.  After the appointment of Alan McDonald as coach, Hafey was often relegated to the bench as Ken Ward played in the back pocket. The Tigers fell to the bottom part of the ladder. Playing a backup role for a poor team, Hafey decided to retire from the VFL at the end of 1958. Over six seasons, he had played in 67 games, starting 52 of them. In 1959, Hafey played for the local Richmond Amateurs who won the premiership that year.
Question: What teams did he play for?
Answer: Hafey was then invited to train at Richmond. At the time, the Tigers were in turmoil after legendary coach Jack Dyer quit.

Problem: Background: Irving Fisher (February 27, 1867 - April 29, 1947) was an American economist, statistician, inventor, and Progressive social campaigner. He was one of the earliest American neoclassical economists, though his later work on debt deflation has been embraced by the Post-Keynesian school. Joseph Schumpeter described him as "the greatest economist the United States has ever produced", an assessment later repeated by James Tobin and Milton Friedman. Fisher made important contributions to utility theory and general equilibrium.
Context: Fisher is probably best remembered today in neoclassical economics for his theory of capital, investment, and interest rates, first exposited in his The Nature of Capital and Income (1906) and elaborated on in The Rate of Interest (1907). His 1930 treatise, The Theory of Interest, summed up a lifetime's research into capital, capital budgeting, credit markets, and the factors (including inflation) that determine interest rates.  Fisher saw that subjective economic value is not only a function of the amount of goods and services owned or exchanged, but also of the moment in time when they are purchased with money. A good available now has a different value than the same good available at a later date; value has a time as well as a quantity dimension. The relative price of goods available at a future date, in terms of goods sacrificed now, is measured by the interest rate. Fisher made free use of the standard diagrams used to teach undergraduate economics, but labeled the axes "consumption now" and "consumption next period" (instead of the usual schematic alternatives of "apples" and "oranges"). The resulting theory, one of considerable power and insight, was presented in detail in The Theory of Interest (for a concise exposition, see here.)  This model, later generalized to the case of K goods and N periods (including the case of infinitely many periods) has become a standard theory of capital and interest, and is described in Gravelle and Rees, and Aliprantis, Brown, and Burkinshaw. This theoretical advance is explained in Hirshleifer.
Question: What else was he known for
Answer: Fisher made free use of the standard diagrams used to teach undergraduate economics,

Problem: Background: Lemon Henry "Blind Lemon" Jefferson (September 24, 1893 - December 19, 1929) was an American blues and gospel singer, songwriter, and musician. He was one of the most popular blues singers of the 1920s and has been called the "Father of the Texas Blues". Jefferson's performances were distinctive because of his high-pitched voice and the originality of his guitar playing. His recordings sold well, but he was not a strong influence on younger blues singers of his generation, who could not imitate him as easily as they could other commercially successful artists.
Context: Jefferson was born blind (or possibly partially blind), near Coutchman, Texas. He was the youngest of seven (or possibly eight) children born to Alex and Clarissa Jefferson, who were sharecroppers. Disputes regarding the date of his birth derive from contradictory census records and draft registration records. By 1900, the family was farming southeast of Streetman, Texas, and his birth date is indicated as September 1893 in the 1900 census. The 1910 census, taken in May, before his birthday, further confirms his year of birth as 1893 and indicated that the family was farming northwest of Wortham, near his birthplace.  In his 1917 draft registration, Jefferson gave his birth date as October 26, 1894, further stating that he then lived in Dallas, Texas, and had been blind since birth. In the 1920 census, he is recorded as having returned to Freestone County and was living with his half-brother, Kit Banks, on a farm between Wortham and Streetman.  Jefferson began playing the guitar in his early teens and soon after he began performing at picnics and parties. He became a street musician, playing in East Texas towns in front of barbershops and on street corners. According to his cousin Alec Jefferson, quoted in the notes for Blind Lemon Jefferson, Classic Sides:  They were rough. Men were hustling women and selling bootleg and Lemon was singing for them all night... he'd start singing about eight and go on until four in the morning... mostly it would be just him sitting there and playing and singing all night.  In the early 1910s, Jefferson began traveling frequently to Dallas, where he met and played with the blues musician Lead Belly. Jefferson was one of the earliest and most prominent figures in the blues movement developing in the Deep Ellum section of Dallas. It is likely that he moved to Deep Ellum on a more permanent basis by 1917, where he met Aaron Thibeaux Walker, also known as T-Bone Walker. Jefferson taught Walker the basics of playing blues guitar in exchange for Walker's occasional services as a guide. By the early 1920s, Jefferson was earning enough money for his musical performances to support a wife and, possibly, a child. However, firm evidence of his marriage and children has not been found.
Question: Where did he go to school?
Answer: