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'.

Example 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?
Example Output: Answer: 310

Example Input: Passage: Richardson is a right-arm fast bowler, and says that, due to his height (178cm) and frame ("70 odd kilos"), he was initially discouraged by coaches to become a pace bowler, a role generally associated with taller and weightier cricketers. He made his List A debut for Western Australia on 21 October 2015 in the 2015–16 Matador BBQs One-Day Cup. In December 2015 he was named in Australia's squad for the 2016 Under-19 Cricket World Cup. On 16 January 2016 he made his Twenty20 debut for the Perth Scorchers in the 2015–16 Big Bash League. He made his first-class debut for Western Australia on 15 March 2016 in the 2015–16 Sheffield Shield.
 Link Information: none Question: Who was the head coach for the Western Australia team when Richardson made his List A debut?
Example Output: Answer: none

Example Input: Passage: The Haig Fras outcrop consists mainly of granite, forming a WSW-ENE trending elongate intrusion. The granite outcrop is surrounded by an area of Devonian-Carboniferous sedimentary rocks. Evidence from gravity data suggests that the extent of the intrusion is greater than the observed outcrop, based on its association with a linear negative gravity anomaly. It is dated at 277 Ma, Early Permian in age, within the range of intrusion ages for the granites that make up the Cornubian batholith. Although the two intrusions have the same trend and are of similar age, they are not thought to be related. In detail, three separate outcrops have been identified using a combination of radiometric data and seabed sampling. The granite is fine to medium-grained, unlike the megacrystic granite typical of the Cornubian batholith intrusions, although this may be due to the low level of sampling available. A foliated granite is locally developed as a marginal facies.
 Link Information: The Cisuralian is the first series/epoch of the Permian. Question: How long did the period which Haig Fras was dated last?
Example Output:
Answer: 21 million years

