Question: Charlie Walker played football mainly for a club that competes in what league?

Context paragraphs:
Hilman Walker: Hilman B. Walker (October 10, 1912 – May 1983) was an American football player and coach.  Walker played at the University of Alabama as an end.  He served as the head football coach at Arizona State Teachers College at Tempe, now Arizona State University in 1942, compiling a record of 2–8.  Walker was the younger brother of Gee Walker, who played in Major League Baseball from 1931 to 1945.

Duane Walker: Duane Allen Walker (born March 15, 1957) is a retired Major League Baseball outfielder.  He played during five seasons at the major league level for the Cincinnati Reds, Texas Rangers, and St. Louis Cardinals.  He was drafted by the Reds in the 1st round (22nd pick) of the secondary phase of the 1976 amateur draft.  Walker played his first professional season with their Class A (Short Season) Eugene Emeralds in , and split his last season between St. Louis and their Triple-A club, the Louisville Redbirds, in .  He is known as the original Walker, Texas Ranger.

Wayne Walker (wide receiver): Ronald Wayne Walker (born December 27, 1966) is a former American professional football player who was a wide receiver in the National Football League (NFL), World League of American Football (WLAF), Canadian Football League (CFL) and Arena Football League (AFL).  He played for the Minnesota Vikings of the NFL, the San Antonio Riders of the WLAF, the Ottawa Rough Riders and Shreveport Pirates of the CFL, and the Tampa Bay Storm of the AFL.  Walker played collegiately at Texas Tech University.

Charlie Walker (footballer, born 1911): Charlie Walker (14 May 1911 – 7 May 1990) was an English footballer who played mainly for West Ham United.

Mike Walker (Welsh footballer): Michael Stewart Gordon "Mike" Walker (born 28 November 1945 in Colwyn Bay, Wales) is a Welsh former footballer and manager.  After starting his career at Reading, Walker played as a goalkeeper in the Football League for five clubs, most notably Watford and Colchester United.  He later managed Colchester, Norwich City, Everton and APOEL.  In 2010, he was inducted into the Colchester United Football Club Hall of Fame.

Cedric Walker: Cedric Walker (born February 10, 1971) is a former American football defensive back and coach.  Walker played football at Stephen F. Austin University; once his stint there concluded, he signed with the AFL's Charlotte Rage.  Walker played for a succession of AFL teams over his ten-season career; these included the Orlando Predators, Arizona Rattlers, Indiana Firebirds, Chicago Rush, Austin Wranglers, and Las Vegas Gladiators.  At the end of his AFL Career, Walker had amassed some 522 solo tackles (614 total); this was (at the time) the league's seventh-highest total.  Walker also won one ArenaBowl as a player; this came with the Arizona Rattlers in 1997.

Charlie Walker (footballer, born 1990): Charlie Walker (born 8 March 1990) is an English semi-professional footballer who plays as a striker for National League South club St Albans City.

Wayne Walker: Wayne Harrison Walker (September 30, 1936 – May 19, 2017) was an American professional football player and sports broadcaster.  He played fifteen seasons with the Detroit Lions of the National Football League, as a linebacker and placekicker.  Walker played in 200 regular season games, the second most for a defensive player at the time.  He played in three Pro Bowls and was thrice selected as a first-team All-NFL player.  After the 1972 season, he retired as a player and was a sports broadcaster for CBS and the sports director for KPIX-TV in San Francisco from 1974 to 1994.  Walker was a weekend sportscaster during the off-season during his later years as a Detroit Lion.

West Ham United F.C.: West Ham United Football Club is a professional football club based in Stratford, East London, England.  They compete in the Premier League, the top tier of English football.  The club re-located to the London Stadium in 2016.

Josef Stroh: Josef "Pepi" Stroh (5 March 1913 – 7 January 1991) was an Austrian footballer and football manager.  He played club football mainly with FK Austria Wien.

Supporting paragraphs: Charlie Walker (footballer, born 1911) West Ham United F.C.
Answer: the Premier League