Question: In what year was the director of "The Day of the Dolphin" born?

Context paragraphs:
Dennis Gray: Dennis Gray was born 1935 in Yorkshire and started climbing when he was 11, after seeing the great Arthur Dolphin in action at Cow and Calf rocks on Ilkley Moor.  He then climbed with a group who called themselves the 'Bradford Lads'.  When called up for National Service Gray volunteered to work as a pay clerk and was posted to Manchester, where he was able to climb with the Rock and Ice club members on a regular basis.  He has climbed with some of the best British climbers of the day; Tom Patey, Don Whillans, Joe Brown, Harold Drasdo, Robin Campbell, Eli Moriarty, Nat Allen, Slim Sorrell, Ron Moseley and many more.

Steve Clark (American football): Stephen Spence Clark (born August 2, 1960) is a former professional American football player who played [[defensive tackle]and offensive guard ] for five seasons for the [[Miami Dolphins]].  He also played on two state championship teams in high school which were a combined (25-1) over two years and was a five team all-American including "Parade Magazine", he was also named Most Valuable Player of the state of Utah.  At the University of Utah he was named two time All-WAC defensive tackle, Defensive Most Valuable Player of the Western Athletic Conference and First Team All-American.  He also played in the East-West Shrine Game and was named MVP of the Senior Bowl.  After the Senior Bowl he was drafted by Don Shula and The Miami Dolphins, his second year in the NFL he played both ways in a pre-season game and Coach Shula knew he had a guy that could back up every position on the offensive and defensive line as well as long snap.  He earned a starting position at right guard and played against [[William Perry (American football)|the Fridge]] when the Dolphins beat the Chicago Bears on Monday Night Football to help keep the undefeated Dolphin record intact.  In the NFL, he also played on two Super Bowl teams with the Miami Dolphins and was the starting right guard before being injured.  Just recently Steve was named to the top 100 greatest players in the history of the University of Utah actually being named 9th best of All-Time.

Mary van der Valk: Maria Elisabeth van der Valk (born July 13, 1958) is a Dutch Children's literature and spirituality writer.  She has written a series of children books for the 9-13 age group- In 2009, her book "Dolfijnenmysterie in Mexico!"  ("Dolphin Mystery in Mexico!") , was the recipient of the Berlicum Children's Jury Award as the best children's book of the year.

Bob Kuechenberg: Robert John Kuechenberg (born October 14, 1947) is a former National Football League guard for the Miami Dolphins for fourteen seasons between 1970 and 1983, spending the 1984 season on injured reserve.  He was a mainstay in a line that included Hall of Famers Jim Langer, Larry Little, and Dwight Stephenson and played in six Pro Bowls in the late 1970s and early 1980s.  He was selected as one of the top 15 finalists for the Pro Football Hall of Fame from 2002–2006, and one of the top 17 finalists from 2007–2009, but missed the cut every year.  He was inducted into the Miami Dolphin's Honor Roll on December 15, 1995.  Bob is the brother of former Chicago Bears linebacker Rudy Kuechenberg.

Tommy Keene: Tommy Keene (born June 30, 1958) is an American singer-songwriter, best known for releasing critically acclaimed new wave/power pop songs in the 1980s.  He has a longtime cult following among fans of the musical genre of power pop.  Originally hailing from Washington D.C., he first received critical acclaim with his pioneering pop band The Razz, who released several local independent singles.  His 1984 EP "Places That Are Gone" became one of the year's top selling independent releases.  The EP garnered a four-star review in "Rolling Stone", and was voted the #1 EP in the following year's "Village Voice" Pazz & Jop Poll.  Keene has since recorded and released numerous albums on such labels as Dolphin, Geffen and Matador Records.  He has worked with producers T-Bone Burnett, Don Dixon, and R. Walt Vincent.  He continues to record and tour and recently released an album with Robert Pollard, formerly of Guided by Voices, as 'The Keene Brothers.'  Tommy's three favorite bands are The Beatles, The Rolling Stones and The Who.  Keene also played guitar on the Goo Goo Dolls' hit song, "Broadway", on their 1998 album, "Dizzy Up The Girl".

Mike Nichols: Mike Nichols (born Mikhail Igor Peschkowsky; November 6, 1931 – November 19, 2014) was an American film and theatre director, producer, actor and comedian.  He was noted for his ability to work across a range of genres and an aptitude for getting the best out of actors regardless of their acting experience.  Nichols began his career in the 1950s with the comedy improvisational troupe, The Compass Players, predecessor of The Second City, in Chicago.  He then teamed up with his improv partner, Elaine May, to form the comedy duo Nichols and May.  Their live improv acts were a hit on Broadway resulting in three albums, with their debut album winning a Grammy Award.

Lincoln O'Barry: Lincoln O'Barry (born February 23, 1972) is an American director, producer and animal rights activist.  O'Barry is known for the Animal Planet series "Blood Dolphins".  He is the son of Ric O'Barry, former Flipper dolphin trainer and the founder of the Ric O'Barry Dolphin Project.

The Day of the Dolphin: The Day of the Dolphin is a 1973 American science-fiction thriller film directed by Mike Nichols and starring George C. Scott.  Based on the 1967 novel "Un animal doué de raison" (lit.  "A Sentient Animal"), by French writer Robert Merle, the screenplay was written by Buck Henry.

Charles Martin Smith: Charles Martin Smith (born October 30, 1953) is an American film actor, writer, and director.  He is best known for his roles in "American Graffiti" (1973), "The Buddy Holly Story" (1978), "Never Cry Wolf" (1983), "Starman" (1984), "The Untouchables" (1987), "Deep Cover" (1992), "Speechless" (1994) and "Deep Impact" (1998).  He is further known for directing the films "The Snow Walker" (2003), "Dolphin Tale" (2011) and "Dolphin Tale 2" (2014).

T. D. (mascot): T.D. (for The Dolphin) is the official mascot of the National Football League's Miami Dolphins.  The Dolphins' official website jokingly states that T.D. was signed on April 18, 1997 by former head coach Jimmy Johnson.  The Dolphins conducted a "Name the Mascot" contest that drew over 13,000 entries, covering all 50 states and 22 countries.  528 names were suggested and the winning entry was announced at the annual Dolphins Awards Banquet on June 4, 1997.  T.D. first appeared at a Dolphins home game on August 10, 1997 against the Chicago Bears; his first Dolphins home playoff appearance was January 2, 1999 in a win against the Buffalo Bills.  He was selected to the Pro Bowl in 1999, 2001, 2003, 2004, 2010, 2012, 2014, 2016, and was the first NFL mascot to participate in the Hall of Fame Game in Canton, Ohio in 2001.  He was invited to Hong Kong to participate in the 2005 Chinese New Year's Day Parade, and recently on May 2, 2015, T.D. was invited to participate at 2015 NFL Draft Town in Chicago, Illinois.

Supporting paragraphs: The Day of the Dolphin Mike Nichols
Answer: 1931