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'.

Q: Passage: Maurice had to continue the war against the Persians. In 586 his troops defeated them at the Battle of Solachon south of Dara. In 588, a mutiny by unpaid Byzantine troops against their new commander, Priscus, seemed to offer the Sassanids a chance for a breakthrough, but the mutineers themselves repulsed the ensuing Persian offensive. Later in the year they secured a major victory before Martyropolis. The Sassanid commander, Maruzas, was killed, several of the Persian leaders were captured along with 3,000 other prisoners, and only a thousand men survived to reach refuge at Nisibis. The Byzantines secured much booty, including the Persian battle standards, and sent them, along with Maruzas' head, to Maurice in Constantinople. In 590 two Parthian brothers, Vistahm and Vinduyih, overthrew King Hormizd IV and made the latter's son, Prince Khosrau II, the new King. The former Persian commander-in-chief, Bahram Chobin, who had rebelled against Hormizd IV, claimed the throne for himself and defeated Khosrau. Khosrau and the two Parthians fled to the Byzantine court. Although the Senate unanimously advised against it, Maurice helped Khosrau regain his throne with an army of 35,000 men. In 591 the combined Byzantine-Persian army under generals John Mystacon and Narses defeated Bahram Chobin's forces near Ganzak at the Battle of Blarathon. The victory was decisive; Maurice finally brought the war to a successful conclusion with the re-accession of Khosrau.
 Link Information: none Question: How far south of Dara was the location of Maurice's battle in 586?

A: Answer: none
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Q: Passage: Stalybridge is a town in the Metropolitan Borough of Tameside in Greater Manchester, England. It lies on the course of the River Tame and the Huddersfield canal, on undulating land in the foothills of the Pennines. Historically a part of Cheshire, it is east of Manchester city centre and northwest of Glossop. The road from Oldham, to the pennine passes: the Snake pass and Woodhead, bridges the river at this point. Stalybridge was the junction of three early railway companies. The Ashton, Stalybridge and Liverpool Junction Railway Company was formed on 19 July 1844 and the railway was connected to Stalybridge on 5 October 1846. On 9 July 1847 the company was acquired by the Lancashire and Yorkshire Railway. On 1 August 1849 the Manchester, Stockport and Leeds Railway connected Stalybridge to Huddersfield and later to Stockport. This line later became part of the London and North Western Railway.
 Link Information: The London and North Western Railway (LNWR, L&NWR) was a British railway company between 1846 and 1922.  Question: What year was the London and North Western Railway founded?

A: Answer: 1846 
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Q: Passage: Donaldson was born in Islington, London, and was an England schoolboy international before beginning his football career with Arsenal. He was a member of their 1971 FA Youth Cup-winning side, but never broke through to the first team. In June 1973, he transferred to Second Division club Millwall for £5,000. The team were relegated in 1975, and Donaldson helped them achieve promotion back to the Second Division in 1975–76, and made 258 appearances in all competitions over a six-and-a-half-year period. He acted as an emergency goalkeeper three times during his Millwall career. He spent the summer of 1979 with the Los Angeles Skyhawks of the American Soccer League, and on 5 February 1980, signed for Second Division Cambridge United for a fee of £50,000. He made 132 league appearances for Cambridge and was featured in a 2002 book, Cambridge United: 101 Golden Greats. In 1984, he moved on to Royston Town of the Isthmian League.
 Link Information: 

Islington is the most densely populated borough in the UK according to the 2011 census, with a population density of 138.7 people per hectare, compared to an average of 52.0 for London. Question: How big is the city Donaldson was born in?

A:
Answer: 138.7
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