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.

Q: Passage: Constantinople had been an imperial capital since its consecration in 330 under Roman Emperor, Constantine the Great. In the following eleven centuries, the city had been besieged many times but was captured only once: during the Fourth Crusade in 1204.:304 The crusaders established an unstable Latin state in and around Constantinople while the remaining empire splintered into a number of Byzantine successor states, notably Nicaea, Epirus and Trebizond. They fought as allies against the Latin establishments, but also fought among themselves for the Byzantine throne. The Nicaeans eventually reconquered Constantinople from the Latins in 1261. Thereafter, there was little peace for the much-weakened empire as it fended off successive attacks by the Latins, the Serbians, the Bulgarians, and, most importantly, the Ottoman Turks. The Black Plague between 1346 and 1349 killed almost half of the inhabitants of Constantinople. The city was severely depopulated due to the general economic and territorial decline of the empire, and by 1453 consisted of a series of walled villages separated by vast fields encircled by the fifth-century Theodosian walls. By 1450 the empire was exhausted and had shrunk to a few square miles outside the city of Constantinople itself, the Princes' Islands in the Sea of Marmara, and the Peloponnese with its cultural center at Mystras. The Empire of Trebizond, an independent successor state that formed in the aftermath of the Fourth Crusade, also survived on the coast of the Black Sea. 
Question: In eleven centuries, how many times was Constantinople captured? 
Answer type: Number 

A: 1.
****
Q: Passage: In 1860, there were 20,000 professionals in Russia and 85,000 by 1900. Originally composed of educated nobles, the intelligentsia became dominated by raznochintsy (class-less people) after 1861. In 1833, 78.9 per cent of secondary-school students were children of nobles and bureaucrats, by 1885 they were 49.1 per cent of such students. The proportion of commoners increased from 19.0 to 43.8 per cent, and the remaining percentage were the children of priests. In fear of an educated proletariat, Tsar Nicholas I of Russia limited the number of university students to 3,000 per year, yet there were 25,000 students, by 1894. Similarly the number of periodicals increased from 15 in 1855 to 140 periodical publications in 1885. The "third element" were professionals hired by zemstva. By 1900, there were 47,000 of them, most were liberal radicals. 
Question: How many more professionals in Russia 1900 than in 1860? 
Answer type: Number 

A: 65000.
****
Q: Passage: Coming off their divisional home win over the Rams, the 49ers flew to Texas Stadium for a Week 12 game with the throwback-clad Dallas Cowboys.  In the first quarter, the Niners struck first as kicker Joe Nedney got a 23-yard and a 22-yard field goal.  In the second quarter, the Cowboys took the lead as QB Tony Romo completed a 75-yard TD pass to former 49ers WR Terrell Owens.  Dallas continued its domination as LB Carlos Polk blocked punter Andy Lee's punt into the back of the endzone for a safety.  The Cowboys closed out its period of power as kicker Nick Folk got a 48-yard and a 41-yard field goal, along with Romo completing a 1-yard TD pass to TE Martellus Bennett. In the third quarter, Dallas increased its lead with Romo completing a 10-yard TD pass to WR Patrick Crayton.  San Francisco tried to rally as Nedney got a 35-yard field goal.  In the fourth quarter, the Cowboys answered with Folk getting a 47-yard field goal.  The 49ers tried to come back as QB Shaun Hill completed an 18-yard TD pass to WR Isaac Bruce, but Dallas replied with Folk nailing a 42-yard field goal.  The Niners tried to rally as Hill completed a 9-yard TD pass to RB DeShaun Foster, but that would be as close as San Francisco's comeback would get. 
Question: How many field goals over 30 yards did Nick Folk make? 
Answer type: Number 

A:
4.
****