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: For Week 2, the Cardinals flew to the Northwest to take on the defending NFC Champion Seattle Seahawks. From the get-go, the Cardinals trailed, as the opposing RB Shaun Alexander to score a TD on a 2-yard run. Then, Arizona allowed opposing QB Matt Hasselbeck to complete a 49-yard TD pass to WR Darrell Jackson. There wouldn't be anymore scoring by either team for the remainder of the half. In the third quarter, the Cardinals finally got on the border with kicker Neil Rackers nailing a 43-yard field goal. However, Seattle managed to put the game away with FB Mack Strong's 3-yard TD run. The Cardinals would get a TD, with QB Kurt Warner completing a 40-yard pass to WR Bryant Johnson, but in the end, the Seahawks were the better team in this fight and made the Cardinals move to 1-1.
Question: How many touchdowns were scored in the first half?
Answer type: Number

Ex Output:
2.

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: Hoping to avoid an 0-3 start, the Chargers went home for a Week 3 MNF duel with the New York Jets. In the first quarter, San Diego trailed early as Jets CB David Barrett returned an interception 25 yards for a touchdown on QB Philip Rivers' first attempted pass of the game. The Chargers responded with kicker Nate Kaeding's 36-yard field goal and a Rivers 1-yard TD pass to rookie FB Mike Tolbert. In the second quarter, the 'Bolts increased their lead as CB Antonio Cromartie returned an interception 52 yards for a touchdown. New York tried to answer as QB Brett Favre completed a 3-yard TD pass to WR Laveranues Coles, yet the Chargers replied with Rivers completing a 27-yard TD pass to WR Chris Chambers and a 6-yard TD pass to TE Antonio Gates. In the third quarter, San Diego continued its march as RB LaDainian Tomlinson got a 2-yard TD run. In the fourth quarter, the Jets tried to rally as Favre completed a 4-yard TD pass to WR Chansi Stuckey (with a failed 2-point conversion) and kicker Jay Feely got a 32-yard field goal. San Diego would answer with Tomlinson's 2-yard TD run. New York tried to make another rally as Favre completed a 13-yard TD pass to TE Dustin Keller (with another failed 2-point conversion), yet the 'Bolts pulled away as Kaeding nailed a 49-yard field goal.
Question: How many two yard touchdown runs did Tomlinson have?
Answer type: Number

Ex Output:
2.