Given the task definition and input, reply with output. 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'.

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?
Answer: 1960