Question: Truth was based on which producer from the "CBS Evening News"?

Context paragraphs:
Meg Oliver: Meg Oliver (born December 7, 1970, Birmingham, Michigan) is an award winning Network Television Correspondent and Anchor.  She returned to CBS News in 2015.  She currently reports for CBS This Morning, the CBS Evening News weekend and fills in anchoring for their 24-hour digital network by CBSN On CBSN she has covered extensive live breaking news from the San Bernardino shootings to the murders of WDBJ's Allison Parker and Adam Ward.  In March 2006, she became anchor of the overnight CBS newscast, "Up to the Minute" and remained in that position for three years.  She was also a correspondent for The Early Show, and fill in anchor.  She left CBS in 2009 and worked at ABC News as a correspondent.  She reported for Good Morning America Weekend Edition and ABC World News with David Muir.  She also filled in anchoring on World News Now.

Mary Mapes: Mary Alice Mapes (born May 9, 1956) is an American journalist, former television news producer, and author.  She was a principal producer for CBS News, primarily the "CBS Evening News" and primetime television program "60 Minutes Wednesday".  She is known for breaking the story of the Abu Ghraib torture and prisoner abuse scandal, which won a Peabody Award, and the story of Senator Strom Thurmond's unacknowledged biracial daughter, Essie Mae Washington.  In 2005, she was fired from CBS for her part in the Killian documents controversy.

CBS News: CBS News is the news division of American television and radio service CBS.  The president of CBS News is David Rhodes.  CBS News' broadcasts include the "CBS Evening News", "CBS This Morning", news magazine programs "CBS Sunday Morning", "60 Minutes" and "48 Hours", and Sunday morning political affairs program "Face the Nation".  CBS Radio News produces hourly newscasts for hundreds of radio stations, while CBS also operates a 24-hour news network called CBSN, the first live anchored 24-hour streaming news network that is exclusively online and on smart devices.

Dan Rather: Daniel Irvin Rather Jr. (born October 31, 1931) is an American journalist and the former news anchor for the "CBS Evening News."  He was most recently managing editor and anchor of the television news magazine "Dan Rather Reports" on the cable channel AXS TV.  Rather was anchor of the "CBS Evening News" for 24 years, from March 9, 1981, to March 9, 2005.  He also contributed to CBS's "60 Minutes".  Rather became embroiled in controversy about a disputed news report involving President George W. Bush's Vietnam-era service in the National Guard and subsequently left "CBS Evening News" in 2005, and he left the network entirely after 44 years in 2006.

Burton Benjamin: Burton Richard Benjamin (October 9, 1917 – September 18, 1988) was a vice president and director of CBS News.  He worked at CBS for 29 years, as a writer, producer, and executive.  In that time, he was director of CBS News from 1978 to 1981 and executive producer of "CBS Evening News" from 1975 to 1978.  He was a senior executive producer from 1968 to 1975 and from 1981 to 1985.  At CBS, Benjamin often produced programs with Walter Cronkite.

News and Views (TV series): News and Views was an early American evening news program.  Broadcast on ABC from 1948 to 1951, it was ABC's first evening news program and one of the first such programs on any television network; Both CBS and NBC also initiated their evening news programs (respectively "CBS Television News" and "Camel News Caravan", called "Camel Newsreel Theatre" at first) that same year, both debuting a few months before the first broadcast of "News and Views" on August 11, 1948.

Randall Pinkston: Randall Pinkston was a correspondent/anchor for Al Jazeera America.  Previously he was with CBS News.  After a stint as a White House Correspondent in CBS's Washington Bureau, Pinkston became a general assignment reporter, contributing to CBS broadcasts, including CBS Evening News, Morning News, Weekend News, CBS News Sunday Morning and 48 Hours.  Pinkston also contributed to the CBS Reports documentary, Legacy of Shame with Correspondent Dan Rather.  Pinkston has filled in as anchor on the CBS Evening News-Weekend Edition, Up to the Minute and CBS Morning News.

Huntley-Brinkley Report: The Huntley-Brinkley Report (sometimes known as The Texaco Huntley-Brinkley Report for one of its early sponsors) was NBC's flagship evening news program from October 29, 1956, to July 31, 1970.  It was anchored by Chet Huntley in New York City, and David Brinkley in Washington, D.C. It succeeded the "Camel News Caravan", anchored by John Cameron Swayze.  The program ran for 15 minutes at its inception but expanded to 30 minutes on September 9, 1963, exactly a week after the "CBS Evening News" with Walter Cronkite did so.  It was developed and produced initially by Reuven Frank.  Frank left the program in 1962 to produce documentaries (Eliot Frankel replaced him) but returned to the program the following year when it expanded to 30 minutes.  He was succeeded as executive producer in 1965 by Robert "Shad" Northshield and by Wallace Westfeldt in 1969.

CBS Evening News: CBS Evening News is the flagship evening television news program of CBS News, the news division of the CBS television network in the United States.  The program has been broadcast since May 3, 1948 under the original title "CBS Television News", eventually adopting its current title in 1963.  Since June 19, 2017, the program is anchored by Anthony Mason on an interim basis.  Previous anchors have included Douglas Edwards, Walter Cronkite, Dan Rather, Connie Chung, Bob Schieffer, Katie Couric and Scott Pelley.

Truth (2015 film): Truth is a 2015 American political docudrama film written and directed by James Vanderbilt in his directorial debut.  It is based on American journalist and television news producer Mary Mapes' memoir "Truth and Duty: The Press, the President and the Privilege of Power".  The film focuses on the Killian documents controversy, and the resulting last days of news anchor Dan Rather and producer Mary Mapes at CBS News.  It stars Cate Blanchett as Mapes and Robert Redford as Rather.

Supporting paragraphs: Truth (2015 film) Mary Mapes
Answer: Mary Alice Mapes