input: Please answer the following: Extract the answer to the question from the following context. Question: what time period is mentioned first? Context: In 1931, RCA Victor introduced their vinyl-based Victrolac compound as a material for some unusual-format and special-purpose records. By the end of the 1930s vinyl's advantages of light weight, relative unbreakability and low surface noise had made it the material of choice for prerecorded radio programming and other critical applications. When it came to ordinary 78 rpm records, however, the much higher cost of the raw material, as well as its vulnerability to the heavy pickups and crudely mass-produced steel needles still commonly used in home record players, made its general substitution for shellac impractical at that time. During the Second World War, the United States Armed Forces produced thousands of 12-inch vinyl 78 rpm V-Discs for use by the troops overseas. After the war, the wider use of vinyl became more practical as new record players with relatively lightweight crystal pickups and precision-ground styli made of sapphire or an exotic osmium alloy proliferated. In late 1945, RCA Victor began offering special transparent red vinyl De Luxe pressings of some classical 78s, at a de luxe price. Later, Decca Records introduced vinyl Deccalite 78s, while other record companies came up with vinyl concoctions such as Metrolite, Merco Plastic and Sav-o-flex, but these were mainly used to produce "unbreakable" children's records and special thin vinyl DJ pressings for shipment to radio stations.
++++++++++
output: 1931

Please answer this: Extract the answer to the question from the following context. Question: What was Kerry trying to beat Shannon for? Context: The junior U.S. Senator from Massachusetts, Paul Tsongas, announced in 1984 that he would be stepping down for health reasons. Kerry ran, and as in his 1982 race for Lieutenant Governor, he did not receive the endorsement of the party regulars at the state Democratic convention. Congressman James Shannon, a favorite of House Speaker Tip O'Neill, was the early favorite to win the nomination, and he "won broad establishment support and led in early polling." Again as in 1982, however, Kerry prevailed in a close primary.
++++++++
Answer: the nomination

Problem: Extract the answer to the question from the following context. Question: Religious principles can't be used to deny what? Context: ^Note 2: in 1789 the Georgia Constitution was amended as follows: "Article IV. Section 10. No person within this state shall, upon any pretense, be deprived of the inestimable privilege of worshipping God in any manner agreeable to his own conscience, nor be compelled to attend any place of worship contrary to his own faith and judgment; nor shall he ever be obliged to pay tithes, taxes, or any other rate, for the building or repairing any place of worship, or for the maintenance of any minister or ministry, contrary to what he believes to be right, or hath voluntarily engaged to do. No one religious society shall ever be established in this state, in preference to another; nor shall any person be denied the enjoyment of any civil right merely on account of his religious principles."

A: civil right

Problem: Given the question: Extract the answer to the question from the following context. Question: What was established in the 61st year of the 19th century? Context: The layout of the inner suburbs on a largely one-mile grid pattern, cut through by wide radial boulevards, and string of gardens surrounding the central city was largely established in the 1850s and 1860s. These areas were rapidly filled from the mid 1850s by the ubiquitous terrace house, as well as detached houses and some grand mansions in large grounds, while some of the major roads developed as shopping streets. Melbourne quickly became a major finance centre, home to several banks, the Royal Mint, and Australia's first stock exchange in 1861. In 1855 the Melbourne Cricket Club secured possession of its now famous ground, the MCG. Members of the Melbourne Football Club codified Australian football in 1859, and Yarra rowing clubs and "regattas" became popular about the same time. In 1861 the Melbourne Cup was first run. In 1864 Melbourne acquired its first public monumentthe Burke and Wills statue.
++++++++++++++++++++++++++++++++
The answer is:
Australia's first stock exchange

input question: Extract the answer to the question from the following context. Question: What is the differemce between the two types of annelids? Context: Annelids with blood vessels use metanephridia to remove soluble waste products, while those without use protonephridia. Both of these systems use a two-stage filtration process, in which fluid and waste products are first extracted and these are filtered again to re-absorb any re-usable materials while dumping toxic and spent materials as urine. The difference is that protonephridia combine both filtration stages in the same organ, while metanephridia perform only the second filtration and rely on other mechanisms for the first in annelids special filter cells in the walls of the blood vessels let fluids and other small molecules pass into the coelomic fluid, where it circulates to the metanephridia. In annelids the points at which fluid enters the protonephridia or metanephridia are on the forward side of a septum while the second-stage filter and the nephridiopore (exit opening in the body wall) are in the following segment. As a result, the hindmost segment (before the growth zone and pygidium) has no structure that extracts its wastes, as there is no following segment to filter and discharge them, while the first segment contains an extraction structure that passes wastes to the second, but does not contain the structures that re-filter and discharge urine.???
output answer: with blood vessels use metanephridia to remove soluble waste products, while those without use protonephridia

input question: Extract the answer to the question from the following context. Question: Who, aside from the leader, died because of causing the death of students? Context: 26 March 1991 is the day that marks the clash between military soldiers and peaceful demonstrating students which climaxed in the massacre of dozens under the orders of then President Moussa Traore. He and three associates were later tried and convicted and received the death sentence for their part in the decision-making of that day. Nowadays, the day is a national holiday in order to remember the tragic events and the people that were killed.[unreliable source?] The coup is remembered as Mali's March Revolution of 1991.???
output answer:
three associates