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.
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Question: Passage: The squadron of Vasco da Gama left Portugal in 1497, rounded the Cape and continued along the coast of East Africa, where a local pilot was brought on board who guided them across the Indian Ocean, reaching Calicut in western India in May 1498. The second voyage to India was dispatched in 1500 under Pedro Alvares Cabral. While following the same south-westerly route as Gama across the Atlantic Ocean, Cabral made landfall on the Brazilian coast. This was probably an accidental discovery, but it has been speculated that the Portuguese secretly knew of Brazil's existence and that it lay on their side of the Tordesillas line. Cabral recommended to the Portuguese King that the land be settled, and two follow up voyages were sent in 1501 and 1503. The land was found to be abundant in pau-brasil, or brazilwood, from which it later inherited its name, but the failure to find gold or silver meant that for the time being Portuguese efforts were concentrated on India. On 8 July 1497 the fleet, consisting of four ships and a crew of 170 men, left Lisbon The travel led by Vasco da Gama to Calicut was the starting point for deployment of Portuguese in the African east coast and in the Indian Ocean. The first contact occurred on 20 May 1498. After some conflict, he got an ambiguous letter for trade with the Zamorin of Calicut, leaving there some men to establish a trading post. Since then explorations lost the private nature, taking place under the exclusive of the Portuguese Crown. Shortly after, the Casa da India was established in Lisbon to administer the royal monopoly of navigation and trade.
Question: How many years passed between the first and fourth voyage to India?
Answer type: Number

Answer: 6.

Question: Passage: The 2010 maternal mortality rate per 100,000 births for Guinea is 680. This is compared with 859.9 in 2008 and 964.7 in 1990. The under 5 mortality rate, per 1,000 births is 146 and the neonatal mortality as a percentage of under 5s mortality is 29. In Guinea the number of midwives per 1,000 live births is 1 and the lifetime risk of death for pregnant women is 1 in 26. Guinea has the second highest prevalence of female genital mutilation in the world.
Question: How many, per 100,000 births, had the maternal mortality rate decreased in 2008 from 1990?
Answer type: Number

Answer: 104.8.

Question: Passage: After the Bills punted on their opening drive, the Patriots drove 48 yards to the Bills 25 and Gostkowski was good on a 43-yard field goal. On the second play of the Bills next drive, Fitzpatrick was strip-sacked by Wilfork with Cunningham recovering at the Patriots 13. Three plays later, Ridley scored on a 1-yard touchdown run, increasing the lead to 10-0. The Bills responded by driving to the Patriots 23 and Lindell was good on a 41-yard field goal, trimming the deficit to 10-3. This led to four straight touchdown drives before halftime. The Patriots responded by racing 83 yards in 8 plays with Woodhead scoring on a 15-yard touchdown run, increasing the lead to 17-3. The Bills answered right back, racing 80 yards in just 6 plays, scoring on a 14-yard run by Jackson, trimming the deficit to 17-10. The Patriots drove 82 yards in 6 plays, scoring on Brady's 12-yard touchdown pass to Gronkowski, upping the lead to 24-10. The Bills weren't done though, marching 75 yards in 11 plays, scoring on Fitzpatrick's two-yard touchdown pass to Chandler, bringing the deficit to 24-17 at halftime. The Patriots drove to the Bills 31, but on 3rd-and-5, Marcell Dareus and Kyle Williams sacked Brady for a 7-yard loss and the Patriots punted rather than attempt a 56-yard field goal. After a Bills punt, aided by an unnecessary roughness penalty bringing the ball to the Bills 39, the Patriots needed just four plays to go 39 yards, scoring on Brady's 18-yard screen pass to Woodhead, his first multi-touchdown game of his career, making the score 31-17. The Bills answered, though, marching 84 yards in 11 plays, with Jackson trimming the deficit to 31-24 on a 1-yard run. The Bills drove to the Patriots 13, but Jackson was stripped by McCourty at the 1 and Arrington recovered. The Patriots were forced to punt, and the Bills raced 55 yards in a minute-and-a-half, scoring on Fitzpatrick's 2-yard touchdown pass to Jones, trimming the deficit to just 34-31. Edelman returned the ensuing kickoff 32 yards to the Patriots 32, and the Patriots drove to the Bills 9, but the Bills defense kept the Patriots out of the end zone, giving the Bills a chance down just 37-31. The Bills drove to the Patriots 15, but, McCourty intercepted Fitzpatrick's next pass in the end zone with 0:23 seconds left, and the Patriots were able to run out the clock. With the win, the Patriots improved to 6-3 on the season and 11-0 against the Buffalo Bills at Gillette Stadium.
Question: How many points behind were the Bills at the half?
Answer type: Number

Answer:
7.