This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.

Ex Input:
Passage: Salks vaccine was then used in a test called the Francis Field Trial, led by Thomas Francis, Jr., the largest medical experiment in history at that time. The test began with about 4,000 children at Franklin Sherman Elementary School in McLean, Virginia, and eventually involved 1.8 million children, in 44 states from Maine to California. By the conclusion of the study, roughly 440,000 received one or more injections of the vaccine, about 210,000 children received a placebo, consisting of harmless culture media, and 1.2 million children received no vaccination and served as a control group, who would then be observed to see if any contracted polio. The results of the field trial were announced 12 April 1955 (the tenth anniversary of the death of President Franklin D. Roosevelt, whose Franklin D. Roosevelts paralytic illness was generally believed to have been caused by polio). The Salk vaccine had been 60-70% effective against PV1 (poliovirus type 1), over 90% effective against PV2 and PV3, and 94% effective against the development of bulbar polio. Soon after Salks vaccine was licensed in 1955, childrens vaccination campaigns were launched. In the U.S, following a mass immunization campaign promoted by the March of Dimes, the annual number of polio cases fell from 35,000 in 1953 to 5,600 by 1957. By 1961 only 161 cases were recorded in the United States. 
Question: How many states chose not to particpate in the Salks vaccine? 
Answer type: Number 

Ex Output:
6.


Ex Input:
Passage: At the start of the 1910s, the decade would begin with the Panic of 1910–1911 stifling economic growth for a lengthy period of time. History would later take its course on July 30, 1914; as the average stood at a level of 71.42 when a decision was made to close down the New York Stock Exchange, and suspend trading for a span of four and a half months. Some historians believe the exchange closed because of a concern that markets would plunge as a result of panic over the onset of World War I. An alternative explanation is that the Secretary of the Treasury, William Gibbs McAdoo, closed the exchange to conserve the U.S. gold stock in order to launch the Federal Reserve System later that year, with enough gold to keep the United States on par with the gold standard. When the markets reopened on December 12, 1914, the index closed at 74.56, a gain of 4.4 percent. This is frequently reported as a large drop, due to using a later redefinition. Reports from the time say that the day was positive. Following World War I, the United States would experience another economic downturn, the post-World War I recession. The Dows performance would remain unchanged from the closing value of the previous decade, adding only 8.26%, from 99.05 points at the beginning of 1910, to a level of 107.23 points at the end of 1919. 
Question: How many points did the Dow rise between 1910 and 1919? 
Answer type: Number 

Ex Output:
8.18.


Ex Input:
Passage: Substantial increases were made in social security benefits such as injury and sickness benefits, pensions, unemployment benefits, housing allowances, basic subsistence aid allowances, and family allowances and living allowances. In the governments first budget, sickness benefits were increased by 9.3%, pensions for war widows by 25%, pensions for the war wounded by 16%, and retirement pensions by 5%. Numerically, pensions went up by 6.4% (1970), 5.5% (1971), 9.5% (1972), 11.4% (1973), and 11.2% (1974). Adjusted for changes in the annual price index, pensions went up in real terms by 3.1% (1970), 0.3% (1971), 3.9% (1972), 4.4% (1973), and 4.2% (1974). Between 1972 and 1974, the purchasing power of pensioners went up by 19%. In 1970, war pensions were increased by 16%. War victim’s pensions went up by 5.5% in January 1971, and by 6.3% in January 1972. By 1972, war pensions for orphans and parents had gone up by around 40%, and for widows by around 50%. Between 1970 and 1972, the “Landabgaberente” (land transfer pension) went up by 55%. Between 1969 and 1974, the average real standard rate of income support rose (in 1991 prices) from around 300 DM to around 400 DM. Between 1970 and 1974, unemployment benefits rose from around 300 euros to around 400 euros per month, and unemployment assistance from just under 200 euros per month to just under 400 euros per month. In 2001 prices, the average standard social assistance benefit level rose from around 200 euros per month in 1969 to over 250 euros per month in 1974. During most of Brandt’s years as chancellor, the majority of benefits increased as a percentage of average net earnings. 
Question: In which year did the second lowest pension increase occur, 1970 or 1971? 
Answer type: Date 

Ex Output:

{'day': '', 'month': '', 'year': '1970'}.