Question: What pick did Trent Williams get drafted at in the 2010 NFL draft?

Context paragraphs:
Jon Asamoah: Jonathan Yao-Lante Asamoah (born July 21, 1988) is an former offensive guard who played in the National Football League (NFL).  He was drafted by the Kansas City Chiefs in the third round of the 2010 NFL Draft.  He played college football at Illinois.  Asamoah was considered one of the top interior offensive linemen for the 2010 NFL Draft.  Asamoah has also played for the Atlanta Falcons.

List of Iowa State Cyclones in the NFL Draft: The Iowa State Cyclones college football team competes as part of the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision (FBS), and represents the Iowa State University in the Big 12 Conference (Big 12).  ISU has had 123 players drafted into the National Football League (NFL) since the first draft held in 1936, through the 2016 NFL Draft.  ISU has only seen one player taken in the first round, George Amundson with the 14th overall pick in the 1973 NFL Draft by the Houston Oilers.  Troy Davis was drafted in the third round of the 1997 NFL draft by the New Orleans Saints, he has since been inducted into the College Football Hall of Fame.  Kelechi Osemele was drafted in the second round of the 2012 NFL draft by the Baltimore Ravens; he went on to win Super Bowl XLVII with the Ravens as their starting right tackle.  Six former Cyclones who were drafted have been selected to a Pro Bowl or AFL All-Star Game.

2010 Washington Redskins season: The 2010 Washington Redskins season was the 78th season for the team in the National Football League (NFL), and their first under new head coach Mike Shanahan, who also began his term as the team's Vice President of Football Operations.  The Redskins obtained the 4th pick in the 2010 NFL Draft as a result of their 4–12 record from their previous season, which they used to draft Oklahoma tackle Trent Williams.  Finishing the season 6–10, the Redskins improved on their 4–12 record from the 2009 season, but were officially eliminated from postseason contention in Week 14.  Of the 16 games of the season, only four (all losses) were decided by more than a single possession.

Rennie Curran: Rennie Curran (born November 10, 1988) is a former American football linebacker.  He played college football at the University of Georgia.  Curran was considered one of the top weakside linebackers of his class, and has been called "the most dominant defensive player in the game" by "The Sporting News".  In January 2010, Curran announced that he was forgoing his final year of eligibility to enter the 2010 NFL Draft.  He was the 97th pick in the 2010 NFL Draft by the Titans.  He is also a keynote speaker, life and business coach, author and musician.

Darrell Stuckey: Darrell Stuckey, Jr. (born June 16, 1987) is an American football safety and special teamer who is currently a free agent.  He attended University of Kansas throughout his college career.  Stuckey was an All-Big 12 First Team selection in 2008 and was considered one of the top safeties available in the 2010 NFL Draft.  He was drafted by the San Diego Chargers in the fourth round of the 2010 NFL Draft.

Trent Williams: Trent Williams (born July 19, 1988) is an American football offensive tackle for the Washington Redskins of the National Football League (NFL).  He played college football at Oklahoma, and was recognized as an All-American.  He was considered one of the best tackle prospects available for the 2010 NFL Draft, and was drafted fourth overall by the Redskins.

2009 NFL Draft: The 2009 NFL Draft was the seventy-fourth annual meeting of National Football League (NFL) franchises to select newly eligible football players.  The draft took place at Radio City Music Hall in New York City, New York, on April 25 and 26, 2009.  The draft consisted of two rounds on the first day starting at 4:00 pm EDT, and five rounds on the second day starting at 10:00 am EDT.  To compensate for the time change from the previous year and in an effort to help shorten the draft, teams were no longer on the clock for 15 minutes in the first round and 10 minutes in the second round.  Each team now had 10 minutes to make their selection in the first round and seven minutes in the second round.  Rounds three through seven were shortened to five minutes per team.  This was the first year that the NFL used this format and it was changed again the following year for the 2010 NFL Draft.  The 2009 NFL Draft was televised by both NFL Network and ESPN and was the first to have cheerleaders.  The Detroit Lions, who became the first team in NFL history to finish a season at 0–16, used the first selection in the draft to select University of Georgia quarterback Matthew Stafford.

Billy Sims: Billy Ray Sims (born September 18, 1955) is a former American college and professional football player who was a running back in the National Football League (NFL) for five seasons during the 1980s.  Sims played college football for the University of Oklahoma, where he was a two-time consensus All-American, and won the Heisman Trophy in 1978.  He was the first overall pick in the 1980 NFL Draft, and played professionally for the NFL's Detroit Lions.  Sims was the last Oklahoma player taken Number 1 overall in the NFL Draft until quarterback Sam Bradford was taken first in the 2010 NFL Draft.  He was given the nickname "Kung Fu Billy Sims" by ESPN's Chris Berman, after a game where the Detroit Lions played the Houston Oilers.  In the NFL Films highlight, rather than be tackled during a rushing attempt, Sims ran at, jumped, and, while fully airborne, kicked Oilers Cornerback Steve Brown in the head.

Terry Caulley: Terry J. Caulley (born June 22, 1984) is a former American Football running back.  He played college football at Connecticut.  Despite sitting out the second half of 2003 and the entire 2004 season with a knee injury, he has racked up 3,187 rushing yards including 31 touchdowns.  In 2003, Caulley had a breakout game against the University at Buffalo, rushing for 236 yards.  Despite having a successful college career, he did not get drafted in the 2007 NFL Draft.  However, he signed with the Washington Redskins as an undrafted rookie free agent on April 30, 2007.  He was released by the Redskins on June 1, 2007.

Eli Herring: Eli Herring (born 1969) is a former Brigham Young University (BYU) offensive tackle who decided not to play in the National Football League (NFL) for religious reasons involving working on the Sabbath and made his intention clear to all NFL teams prior to the 1995 NFL draft.  Nonetheless, the devout Mormon was drafted in the 6th round by the Oakland Raiders.  He is one of few people to get drafted in the NFL after declaring an intention never to play.  He is now married with seven children and works as a school teacher and assistant football coach at Mountain View High School in Orem, Utah.

Supporting paragraphs: 2010 Washington Redskins season Trent Williams
Answer: 4th