Question:
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.
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.
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How long did he teach

Answer:

input: At the age of 15, Grade became an agent for a clothing company, and shortly afterwards started his own business. In 1926, he was declared Charleston Champion of the World at a dancing competition at the Royal Albert Hall. Fred Astaire was one of the judges. Grade subsequently became a professional dancer going by the name Louis Grad; this form came from a Paris reporter's typing error that Grade liked and decided to keep. Decades later, the then octogenarian Lord Grade once danced the Charleston at a party Arthur Ochs Sulzberger gave in New York. Signed as a dancer by Joe Collins (father of Jackie and Joan Collins) in 1931, around 1934, Grade went into partnership with him and became a talent agent in their company Collins & Grade. Among their earliest clients were the harmonica player Larry Adler and the jazz group Quintet of the Hot Club of France. Following the beginning of the Second World War in 1939, Grade became involved in arranging entertainment for soldiers in Harrogate, and later joined the British Army. He was discharged after two years when an old problem with swelling of the knees, which had earlier ended his dancing career, recurred. In 1945, the arrangement with Collins having been terminated, Grade formed a partnership with his brother Leslie (Lew and Leslie Grade Ltd., or the Grade Organisation). That year, the brothers traveled in the United States, where they developed their entertainment interests. His connections included, among others, Bob Hope and Judy Garland, who performed in Britain for the first time. The brothers became the main bookers of artists for the London Palladium in 1948, then managed by Val Parnell for the Moss Empires Group owned by the family of Prince Littler.

Answer this question "Was that business successfull?"
output: 1931,

Answer the question at the end by quoting:

Louis-Dreyfus was born in New York City. Her American-born mother, Judith (nee LeFever), was a writer and special needs tutor, and her French-born father, Gerard Louis-Dreyfus, chaired Louis Dreyfus Energy Services. She is a great-great-granddaughter of Leopold Louis-Dreyfus, who in 1851 founded the Louis Dreyfus Group, a French commodities and shipping conglomerate, which members of her family control into the 21st century. Her paternal grandfather, Pierre Louis-Dreyfus, was president of the Louis Dreyfus Group.
As part of her comedic training, Louis-Dreyfus appeared in The Second City, one of Chicago's best-known improvisation theatre groups (whose alumni include Alan Arkin, Steve Carell, Stephen Colbert, Tina Fey, Amy Poehler, and Shelley Long). It was her performance with The Practical Theatre Company at their "Golden 50th Anniversary Jubilee" that led to her being asked to join the cast of NBC's Saturday Night Live at the age of 21. Louis-Dreyfus was subsequently made into a cast member on Saturday Night Live from 1982 to 1985, becoming the youngest female cast member in the history of the program at that time. During her time on SNL, she appeared alongside several actors who would later rise to prominence, such as Eddie Murphy, Jim Belushi, Billy Crystal, and Martin Short. It was during her third and final year on SNL that she met writer Larry David during his only year on the show, who would later co-create Seinfeld. Louis-Dreyfus has commented that her casting on SNL was a "Cinderella-getting-to-go-to-the-ball kind of experience"; however, she has also admitted that at times it was often quite tense, stating that she "didn't know how to navigate the waters of show business in general and specifically doing a live sketch-comedy show". Following her 1985 departure from SNL, Louis-Dreyfus appeared in several films, including the Woody Allen-directed Hannah and Her Sisters (1986); Soul Man (1986), starring C. Thomas Howell; and National Lampoon's Christmas Vacation (1989), in which she starred alongside fellow SNL alum Chevy Chase. In 1987, Louis-Dreyfus appeared in the NBC sitcom pilot The Art of Being Nick, an intended spin-off from Family Ties starring Scott Valentine. When the pilot did not make it to series, Louis-Dreyfus was retained by producer Gary David Goldberg for a role on his new sitcom Day by Day, as the sarcastic and materialistic neighbor, Eileen Swift. Premiering in early 1988, Day by Day aired for two seasons on NBC before being cancelled.

Did she do any others?
Louis-Dreyfus appeared in the NBC sitcom pilot The Art of Being Nick,