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: Tampa Bay got off to a slow start as Kansas City took the opening drive 69 yards for a touchdown. On Tampa Bay's first play from scrimmage, Earnest Graham fumbled and the Chiefs recovered. The turnover led to another Kansas City touchdown, and a 14-0 lead. Early in the second quarter, Tampa Bay drove into the red zone, and scored a field goal. On the following drive, the Chiefs executed a flea-flicker play and quarterback Tyler Thigpen caught an improbable 37-yard touchdown pass. Late in the second quarter, the Chiefs added a field goal, to stretch the lead to 24-3. On the ensuing kickoff, Clifton Smith scored a 97-yard kickoff return touchdown, the second such in franchise history. The Buccaneer defense held the Chiefs to a 3-and-out, and the offense took over with 1:08 to go. As time expired in the half, Matt Bryant's second field goal trimmed the deficit to 24-13. Neither team scored in the third quarter, and all drives ended in punts. Early in the fourth quarter, Jeff Garcia again drove Tampa Bay into the red zone. Clifton Smith caught a pass, but fumbled at the 13. Kansas City recovered at their own 10. On the very next play, Jamaal Charles fumbled away a pitch in the backfield, and Tampa Bay recovered inside the 3. In a trick play, Jeff Garcia handed off to Earnest Graham, who passed to Alex Smith for a touchdown. A two-point conversion failed, and the score trimmed to 24-19. With 3:34 to go, the Buccaneers drove to the Kansas City 3, and Earnest Graham appeared to be heading for a potential game-tying score. The ball was fumbled, however, and the Chiefs took over on a touchback. The Buccaneer defense forced a punt, and they took over with 1:50 to go. Jeff Garcia quickly drove the Buccaneers to a 25-yard touchdown, and a two-point conversion catch by Alex Smith sent the game to overtime. In the overtime period, Tampa Bay won the coin toss. They drove to the Kansas City 15-yard line, and Matt Bryant won the game on a 34-yard field goal. The victory marked the largest comeback (from 21 points behind to win) in franchise history. With the win, the Buccaneers went into their bye week at 6-3. 
Question: How many touchdowns did the Chiefs score in the first quarter? 
Answer type: Number 

Ex Output:
2.


Ex Input:
Passage: Hoping to rebound from their home loss to the Chargers, the Titans flew to Arrowhead Stadium for a Week 15 intraconference duel with the Kansas City Chiefs. In the first quarter, Tennessee drew first blood as QB Vince Young completed a 16-yard TD pass to WR Roydell Williams for the only score of the period. In the second quarter, the Chiefs tied the game with QB Brodie Croyle completing a 10-yard TD pass to WR Samie Parker. Afterwards, the Titans responded with kicker Rob Bironas managing to get a 37-yard field goal. Kansas City would take the lead prior to halftime with Croyle completing a 9-yard TD pass to FB Kris Wilson. In the third quarter, Tennessee would draw close as Bironas kicked a 37-yard field goal. The Chiefs answered with kicker John Carney getting a 36-yard field goal. Afterwards, the Titans would retake the lead with Young and Williams hooking up with each other again on a 41-yard TD pass. In the fourth quarter, Tennessee clinched the victory with Bironas nailing a 40-yard and a 25-yard field goal. With the win, the Titans kept their playoff hopes alive at 8-6. 
Question: How many yards longer was Roydell Williams' second touchdown compared to his first? 
Answer type: Number 

Ex Output:

25.