instruction:
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.
question:
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 
answer:
6.


question:
Passage: Coming off their win over the Jaguars the Chargers flew to Qwest Field where they played their former division rival, the Seattle Seahawks. In the second quarter San Diego trailed early when kicker Olindo Mare made a 23-yard field goal. Then QB Matt Hasselbeck completed a 9-yard TD pass to TE John Carlson. This was followed in the third quarter by RB Leon Washington returning a kickoff 101&#160;yards to the endzone for a touchdown. The Chargers cut the lead with QB Philip Rivers getting a 3-yard TD pass to WR Malcolm Floyd, followed by Hasselbeck getting sacked by ILB Brandon Siler in the endzone for a safety. Then kicker Nate Kaeding made a 29-yard field goal. The Seahawks increased their lead when Mare made a 23-yard field goal, but the Chargers replied and tied the game when Rivers found TE Antonio Gates on a 12-yard TD pass. (With a successful 2-point conversion as Rivers found WR Legedu Naanee). Before the clock struck zero Seattle took the winning score as RB Leon Washington returned his second kickoff of the game into the endzone running 99&#160;yards for a touchdown, giving the Chargers the loss. 
Question: How many yards was the shortest touchdown pass? 
Answer type: Number 
answer:
3.


question:
Passage: Hoping to rebound from their home loss to the Jaguars, the Broncos flew to Gillette Stadium for a Week 7 Monday Night duel with the New England Patriots.  In the first quarter, Denver trailed early as Patriots kicker Stephen Gostkowski nailed a 31-yard and a 40-yard field goal.  In the second quarter, New England increased its lead with RB Sammy Morris getting a 4-yard TD run, along with QB Matt Cassel completing a 13-yard TD pass to WR Randy Moss.  In the third quarter, the Broncos continued to struggle as Cassel hooked up with Moss again on a 27-yard TD pass, along with completing a 6-yard TD pass to WR Wes Welker.  In the fourth quarter, Denver avoided a shutout loss as QB Jay Cutler completing a 10-yard TD pass to former Patriots TE Daniel Graham.  The Patriots would then seal the win with RB BenJarvus Green-Ellis getting a 1-yard TD run. With the loss, the Broncos went into their bye week at 4-3. 
Question: How many field goals were kicked in the first quarter? 
Answer type: Number 
answer:

2.