In this task, you are given a set of context paragraph and some supporting facts to answer a question. Your task is to generate answer for given question based on set of context paragraphs and supporting facts.
Q: Context_1 : Fulham Football Club ( ) is a professional association football club based in Fulham, Greater London, England. Founded in 1879, they play in the Championship, the second tier of English football, having been relegated from the Premier League in 201314 after 13 consecutive seasons in the top flight. They are the oldest-established football team from London to have played in the Premier League. Context_2 : Fulham Football Club is an English professional football team based in Fulham in the London Borough of Hammersmith and Fulham. The club was formed in West Kensington in 1879 as Fulham St Andrew's Church Sunday School F.C., shortened to Fulham F.C. in 1888. Context_3 : Chelsea Football Club ( ) is a professional football club based in Fulham, London, England that competes in the Premier League, of which they are reigning champions. Founded in 1905, the club's home ground since then has been Stamford Bridge. Context_4 : Chelsea Football Club is an English professional football club based in Fulham, London. The club's involvement in European competition dates back to the 1950s. As champions of England, the club was invited to participate in the inaugural European Champions' Cup in 1955, but withdrew after pressure from the Football League. Three years later, Chelsea made their European debut against Stvnet in the Inter-Cities Fairs Cup, on 30 September 1958. Context_5 : Fulham Football Club is an English professional football team based in Fulham in the London Borough of Hammersmith and Fulham. The club was formed in West Kensington in 1879 as Fulham St Andrew's Church Sunday School F.C., shortened to Fulham F.C. in 1888. They initially played at Fulham Fields before a move to Craven Cottage in 1896; the club played their first professional match in December 1898 and made their FA Cup debut in the 190203 season. Context_6 : Henry Ross (4 April 1881 1953) was a Scottish professional footballer who played as a full back. Harry Ross, who had been born in Brechin in 1881, had moved from Junior football in Brechin to play for Burnley but his major triumphs were with Fulham, then a Southern League club, which he joined in 1904. He played ninety eight games, mainly at right back, for Fulham between 1904 and 1909 and scored a total of nine goals. Fulham had appointed Harry Bradshaw as manager in 1904 and "Bradshaw's teams were built around a wonderful defence in which the consistent and highly regarded Fryer was supported by two Harrys at full back, Ross and Thorpe." He was described in 1905 as "one of those players who can play equally well at right or left back. Physically he is the man for the place. Twenty four years of age, he weighs over thirteen stone and stands a trifle more than five feet ten. He is a vigorous tackler and a powerful kick, and possesses all the attributes of mind and temper that go to make a first class player.". Fulham had entered the Football League in 1907. Ross had played for the Anglo-Scots in an international trial in 1905-06 and had captained Fulham in 1907-08. In that season he had been carried shoulder high from the field, the hero of the hour, after Fulham had defeated Manchester United in a cup tie. From Fulham he moved to St Mirren and thence signed for Brechin, playing his first game on 29 October 1910 against Aberdeen A. Ross played seven games for Brechin City in season 1910-11. Context_7 : Fulham Football Club is an English professional football team based in Fulham in the London Borough of Hammersmith and Fulham. The club was formed in West Kensington in 1879 as Fulham St Andrew's Church Sunday School F.C., before shortening it to Fulham F.C. in 1888. They initially played at Fulham Fields before a move to Craven Cottage in 1896. They played their first match as a professional football club in December 1898 and made their FA Cup debut in the 19021903 season. The club also competed in the Southern Football League until 1907, when they were accepted into the Football League Second Division. Having spent much of their history outside the top division, the team gained promotion to the Premier League in 2001. They have since spent more than ten years in the top flight and reached the final of the UEFA Europa League in 2010. In 2014 they were relegated to the Football League Championship. Context_8 : The 200203 season was Fulham F.C.'s 105th season in professional football and second consecutive season in the FA Premier League. It was also the first season in over 115 years where Fulham did not play at Craven Cottage. Due to pending decisions on re-vamping the cottage, all home games (apart from two early-season fixtures) were played at Loftus Road, the home of Queens Park Rangers. Jean Tigana remained as Fulham manager up until his sacking in April 2003. Former Fulham player Chris Coleman had not long been retired from the game since suffering a career-ending injury in a car crash when he was appointed caretaker manager for the rest of the season. Context_9 : Derek Saunders born 6th January 1928 was an English footballer who played for Chelsea during the 1950s. Context_10 : The London Borough of Hammersmith and Fulham ( ) is a London borough in West London, and forms part of Inner London. Traversed by the east-west main roads of the A4 Great West Road and the A40 Westway, many international corporations have offices in the borough. The local council is Hammersmith and Fulham London Borough Council. The borough is unique in London in having three professional football clubs, Chelsea, Fulham and Queens Park Rangers. fact_1 : Derek Saunders born 6th January 1928 was an English footballer who played for Chelsea during the 1950s. fact_2 : Chelsea Football Club ( ) is a professional football club based in Fulham, London, England that competes in the Premier League, of which they are reigning champions. Question: During the 1950s, Derek Saunders played for what professional football club that was based in Fulham London?
A:
Chelsea Football Club