In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Input: Consider Input: Passage: The spotted green pigeon or Liverpool pigeon (Caloenas maculata) is a species of pigeon which is most likely extinct. It was first mentioned and described in 1783 by John Latham, who had seen two specimens of unknown provenance and a drawing depicting the bird. The taxonomic relationships of the bird were long obscure, and early writers suggested many different possibilities, though the idea that it was related to the Nicobar pigeon (C. nicobarica) prevailed, and it was therefore placed in the same genus, Caloenas. Today, the species is only known from a specimen kept in World Museum, Liverpool. Overlooked for much of the 20th century, it was recognised as a valid extinct species by the IUCN Red List only in 2008. In 2014 a genetic study confirmed it as a distinct species related to the Nicobar pigeon, and showed that the two were the closest relatives of the extinct dodo and Rodrigues solitaire.
Link Information: The animal order Columbiformes is also constituted of pigeons and doves, and includes about 42 genera and 310 species.
Question: How many species of pigeons are there?

Output: Answer: 310

Input: Consider Input: Passage: Jack Rose Compton Gannon (1 November 1882 25 April 1980) was an Irish first-class cricketer and British Army officer. He served initially with the British Army's South Staffordshire Regiment before joining the Indian Army's 23rd Cavalry Regiment. He saw active service in the First World War and the Third Anglo-Afghan War and was mentioned in dispatches. Gannon later served as a military secretary to the British commander-in-chief in India before his retirement in 1933. He was recalled to service in the Second World War and was recognised for his contributions to the war on the western front by two further mentions in dispatches and appointment to British and Dutch honours. In retirement he was manager of The Hurlingham Club an exclusive sports club and honorary secretary of the Hurlingham Polo Association. Gannon played eight first-class cricket matches for Marylebone Cricket Club and the Europeans.
Link Information: The 21st Prince Albert Victor's Own Cavalry (Frontier Force) (Daly's Horse) was raised as the 1st Punjab Irregular Cavalry by Lieutenant Henry Daly at Peshawar on 18 May 1849. Question: Which regiment that Gannon served in was established first?

Output: Answer: 21st Prince Albert Victor's Own Cavalry

Input: Consider Input: Passage: The longest field goal kick in NFL history is 64 yards, a record set by Matt Prater on December 8, 2013. The previous record was 63, originally set by Tom Dempsey (1970) and then matched by Jason Elam (1998), Sebastian Janikowski (2011), David Akers (2012), Graham Gano (2018), and Brett Maher (2019). The record in the CFL is 62 yards, set by Paul McCallum on October 27, 2001. High school, college and most professional football leagues offer only a three-point field goal; however, some professional leagues have encouraged more rare kicks through four-point field goals. NFL Europe encouraged long field goals of 50 yards or more by making those worth four points instead of three (much like Australian rules' Super Goal or basketball's three-point line), a rule since adopted by the Stars Football League. Similarly, the sport of arena football sought (unsuccessfully) to repopularize the drop kick by making that worth four points; it failed, since only one kicker (Brian Mitchell) was able to do it with any semblance of proficiency. (In six-man football, where there is no offensive line, all field goals are worth four points instead of the usual three.)
Link Information: Six-man football is a variant of American football played with six players per team, instead of 11. Question: How many men normally play on the football field, except in the case of six-man football?
Output: Answer: 11