Question: Which documentary was filmed first, Chicken Ranch or Grizzly Man?

Context paragraphs:
The Best Little Whorehouse in Texas: The Best Little Whorehouse in Texas is a musical with a book by Texas author Larry L. King and Peter Masterson and music and lyrics by Carol Hall.  It is based on a story by King that was inspired by the real-life Chicken Ranch in La Grange, Texas.

Jayme Lynn Blaschke: Jayme Lynn Blaschke (born 1969) is an American journalist and author of science fiction, fantasy and related non-fiction.  Primarily known for his genre-related interviews with authors and editors, he published a collected volume of 17 interviews, "Voices of Vision: Creators of Science Fiction and Fantasy Speak", through the University of Nebraska Press in 2005.  In 2016 he published an extensively-researched history of the infamous brothel that served as the inspiration behind The Best Little Whorehouse in Texas titled "Inside the Texas Chicken Ranch: The Definitive Account of the Best Little Whorehouse."  

Chicken Ranch (Texas): The Chicken Ranch was an illegal but tolerated brothel in the U.S. state of Texas that operated from 1905 until 1973.  It was located in Fayette County about 2.5 mi east of downtown La Grange.  The business was established by Miss Jessie Williams, and was the basis for the 1973 ZZ Top song, "La Grange", the 1978 Broadway musical "The Best Little Whorehouse in Texas", and its 1982 film adaptation.

Sandi Sissel: Sandra "Sandi" Sue Sissel (Born August 9, 1949) is an American cinematographer, director and producer.  Her interest in photography was apparent as early as high school, where she was a photojournalist for her school paper.  She is best known for her work in documentaries such as "Salaam Bombay! ", "Chicken Ranch", "Mother Teresa (1986)" as well as TV shows like 60 Minutes, and feature films like "Mr. and Mrs. Smith".  She has been a member of the American Society of Cinematographers since 1994 and the Academy of Motion Picture Arts and Sciences since 2004.

Timothy Treadwell: Timothy Treadwell (born Timothy William Dexter; April 29, 1957 October 6, 2003) was an American bear enthusiast, environmentalist, documentary filmmaker, and founder of the bear-protection organization Grizzly People.  He lived among grizzly bears of Katmai National Park in Alaska for 13 summers.  At the end of his 13th summer in the park, in 2003, he and his girlfriend Amie Huguenard were killed by a 28-year-old brown bear, whose stomach was later found to contain human remains and clothing.  Treadwell's life, work, and death were the subject of Werner Herzog's critically acclaimed documentary film "Grizzly Man" (2005).

Grizzly Man (soundtrack): Grizzly Man is the soundtrack album from the documentary "Grizzly Man", produced by Richard Thompson and released in 2005.

Chicken Ranch (Nevada): The Chicken Ranch is a legal, licensed brothel located about 60 mi west of Las Vegas near the town of Pahrump, in Nye County, at 10511 Homestead Road.  The 17-bed brothel sits on 40 acre of land.  A separate building, connected to the main house by a breezeway, contains three extensively-decorated themed "bungalows" catering to those customers wishing a more luxurious experience.

Chicken Ranch (film): Chicken Ranch is a 1983 documentary film by Nick Broomfield about the famous legalised brothel, the Chicken Ranch, in Pahrump, Nevada.  Photographed by Sandi Sissel.

Grizzly Man: Grizzly Man is a 2005 American documentary film by German director Werner Herzog.  It chronicles the life and death of bear enthusiast Timothy Treadwell.  The film includes some of Treadwell's own footage of his interactions with grizzly bears before 2003, and of interviews with people who knew, or were involved with Treadwell, as well as professionals dealing with wild bears.

Coyotes (song): Coyotes is an American Western song written by Bob McDill and closely associated with cowboy singer Don Edwards.  It appears on Edwards' 1993 album "Goin' Back to Texas", and was featured on the soundtrack of the 2005 documentary film "Grizzly Man".

Supporting paragraphs: Chicken Ranch (film) Grizzly Man
Answer: Chicken Ranch