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: Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Link Information: Operation Market Garden was a failed World War II military operation fought in the Netherlands from 17 to 25 September 1944. Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin?
Example solution: from 17 to 25 September 1944
Example explanation: The passage describes the 704th's actions during Operation Market Garden, and the answer specifies when the operation happened.

Problem: Passage: Sussex has a centuries-long tradition of sport. Sussex has played a key role in the early development of both cricket and stoolball. Cricket is recognised as having been formed in the Weald and Sussex CCC is England's oldest county cricket club. Slindon Cricket Club dominated the sport for a while in the 18th century. The cricket ground at Arundel Castle traditionally plays host to a Duchess of Norfolk's XI which plays the national test sides touring England. The sport of stoolball is also associated with Sussex, which has a claim to be where the sport originated and certainly where its revival took place in the early 20th century. Sussex is represented in the Football League by Brighton & Hove Albion and Crawley Town. Brighton has been a League member since 1920, whereas Crawley was promoted to the League in 2011. Sussex has had its own football association, since 1882 and its own football league, which has since expanded into Surrey, since 1920. In horse racing, Sussex is home to Goodwood, Fontwell Park, Brighton and Plumpton. The All England Jumping Course show jumping facility at Hickstead is situated north of Brighton and Hove.
Link Information: The course was the first permanent showground for equestrian sport in the country, opening in 1960 Question: When was the facility at Hickstead situated north of Brighton and Hove constructed?
Solution: Answer: 1960