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'.

[EX Q]: Passage: Seed spent the 1914–15 season playing in Sunderland reserves, he scored plenty of goals as the team lifted the Durham Senior Cup. Official League football was suspended at the end of that season because of the outbreak of World War I. At the end of the season, the 20-year-old Seed joined the Army Cyclist Corps. In the summer of 1916, he was drafted to France with the 8th battalion of the West Yorkshire Regiment. Seed suffered with depression after his arrival and in July 1917, he was gassed when a German aeroplane dropped mustard gas bombs on a house in Nieuwpoort, Belgium, in which he was sleeping. He returned to England to convalesce and returned to France in August 1918, until being evacuated after being gassed in Valenciennes, France two months later. With the cessation of hostilities, Seed played a Victory League match for Sunderland against Durham City in 1918, however his lungs were weak and he had a poor game. On the strength of that performance the Sunderland directors decided that Seed's wartime experience had finished him as a footballer and gave him a free transfer. Seed never played an official first team game for Sunderland. Seed was discharged from the army in March 1919.
 Link Information:  lasted from 28 July 1914 to 11 November 1918 Question: How long had World War I been going on for the year Jimmy Seed was drafted?
[EX A]: Answer: 2

[EX Q]: Passage: The first obelisks may start to appear in the later 16th century and it is suggested that the obelisk on Compton Pike is Elizabethan in date. More securely dated is a series of obelisks which start to appear in the 18th century. The first of these was the Wakeman obelisk of 1702 by Nicholas Hawksmoor, which is set in the square at Richmond, Yorkshire. Probably several hundred obelisks exist in the British Isles dating from 18th and early 19th centuries. Most of these obelisks, which are often landmarks commemorate famous people and their achievements. At Stowe in Buckinghamshire an obelisk was erected in memory of Wolfe's victory at Quebec in 1752, while at the death of the Duke of Cumberland in 1765 was noted by an obelisk at Englefield Green in Surrey. Thomas Coke, Earl of Leicester, Coke of Norfolk the farming pioneer has a particularly fine obelisk, set up in the park he created at Holkham in Norfolk. Sometimes an obelisk was used to mark the site of a battle such as the obelisk on the site of English Civil War battlefield at Naseby in Leicestershire. Occasionally obelisks are used as mile markers, as on the Great North Road at a mile from Westminster. In Lincoln an elaborate obelisk was set up on the High Bridge in 1762–63 as a conduit for dispensing water, while Anthony Salvin used obelisks as water fountains on the Belton House estates in Lincolnshire.
 Link Information: Nicholas Hawksmoor (probably 1661 – 25 March 1736 Question: What was architect's  age when the Wakeman obelisk was set in the square at Richmond, Yorkshire?
[EX A]: Answer: 41

[EX Q]: Passage: Apart from its engine configuration, the C.43 was conventional and shared its airframe with the three engined C.39. The first five engine aircraft built in France, it was a three bay biplane with fabric covered, rectangular plan wings mounted without stagger. The lower wing had dihedral outboard of the engines, reducing the large interwing gap from inboard to outboard. Though their spans were about equal (on the C.39, the upper span was and the lower one ) or 93% of the upper) the area of the lower wing was only 76% that of the upper because of a narrower chord. The wings were joined by vertical pairs of interplane struts, the forward members attached near the leading edges, and the centre section was supported by similar, shorter cabane struts from the upper fuselage. The inner bay was defined by two close pairs of interplane struts, which between them supported the push-pull pairs of Le Rhône 9C nine cylinder rotary engines about halfway between the wings. Each pair was mounted in a long, cylindrical cowling. Its ailerons, on the upper wing only, were aerodynamically balanced by overhanging extensions beyond the tips, as on the C.39.
 Link Information: Lawrence Hargrave first developed a rotary engine in 1889 using compressed air, intending to use it in powered flight. Question: When was the engine invented?
[EX A]:
Answer: 1889