Question: Which documentary film was released earlier, Man on Wire or To Shoot an Elephant?

Context paragraphs:
When Elephants Were Young: When Elephants Were Young is a 2015 Canadian documentary film directed by World Elephant Day Co-Founder Patricia Sims and narrated by William Shatner.  It follows the story of Wok and his young elephant Nong Mai, as they street beg in Bangkok until the opportunity comes to release the elephant to the wild.  The film premiered at the Whistler Film Festival on December 5, 2015.

Watchout!: Watchout!  is the fourth studio album and fifth album overall by Martha and the Vandellas, released on the Gordy (Motown) label in 1966.  The album featured the hit singles, "I'm Ready for Love" and "Jimmy Mack" and the ballad single, "What Am I Gonna Do Without Your Love?"  This was one of the last albums by the girls to feature songs from Holland, Dozier, Holland, who the following year would leave Motown, as was with William "Mickey" Stevenson, the man who helped put the group on the musical map.  The title of the album "Watchout!"  was derived from a song featured on the flip-side of their hit single "My Baby Loves Me" (released earlier in 1966) entitled "Never Leave Your Baby's Side" (never released on an album).  That song featured a chorus from the Vandellas which warned to "Watchout!"  for "other girls" who could steal your man.

To Shoot an Elephant: To Shoot an Elephant is a 2009 documentary film about the 2008-2009 Gaza War directed by Alberto Arce and Mohammad Rujailahk.

One Lucky Elephant: One Lucky Elephant is an American documentary film directed by Lisa Leeman that premiered December 1, 2011 on OWN: Oprah Winfrey Network as part of the OWN Documentary Club.  The film focuses on the extraordinary human-animal bond between Circus Flora founder, Ivor David Balding, and Flora an endangered African elephant, and their journey to find her a permanent home that leads them to The Elephant Sanctuary (Hohenwald).  The film provides insightful research footage to further discussion of the human-animal bond as part of anthrozoology (human–animal studies), a new academic field that examines the relationships between non-human and human animals.

Electrocuting an Elephant: Electrocuting an Elephant (also known as Electrocution of an Elephant) is a 1903 American, short, black-and-white, silent documentary film of the killing of the elephant Topsy by electrocution at a Coney Island amusement park.  It was produced by the Edison film company (part of the Edison Manufacturing Company) and is believed to have been shot by Edwin S. Porter or Jacob Blair Smith.

Man on Wire: Man on Wire is a 2008 British biographical documentary film directed by James Marsh.  The film chronicles Philippe Petit's 1974 high-wire walk between the Twin Towers of New York's World Trade Center.  It is based on Petit's book, "To Reach the Clouds", released in paperback with the title "Man on Wire".  The title of the film is taken from the police report that led to the arrest (and later release) of Petit, whose performance had lasted for almost one hour.  The film is crafted like a heist film, presenting rare footage of the preparations for the event and still photographs of the walk, alongside re-enactments (with Paul McGill as the young Petit) and present-day interviews with the participants, including Barry Greenhouse, an insurance executive who served as the inside man.

Live Wire (album): Live Wire is a 2004 live CD/DVD released by Christian rock band Third Day.  All of the tracks, except for "Sing a Song" and "Blackbird", are from their album "Wire", released earlier that year.  "Thank You All" was recorded especially for "Live Wire".  Some of the songs were cut off the CD but can be found on the DVD.  The concert was shot and recorded in Louisville, Kentucky, at the Palace Theater.  It has been certified Platinum by the RIAA.

The Invisible Woman (1940 film): The Invisible Woman is an American science fiction comedy film that was released near the end of 1940 by Universal.  It is the third "Invisible Man" film following "The Invisible Man" and "The Invisible Man Returns", which had been released earlier in the year.  It was more of a screwball comedy than other films in the series.

Green Man (album): Green Man is the debut album from English singer-songwriter Mark Owen.  The album was released through RCA and BMG on 2 December 1996, weeks after the official split of his former boyband, Take That.  The album was recorded at Abbey Road Studios in London.  Three singles were released from the album: "Child", "Clementine" and "I Am What I Am".  The album peaked at number 33 on the UK Albums Chart.  The album was re-released in 2003 - with the revised title of "Green Man: Revisited" - following the success of his second studio album, "In Your Own Time" which had been released earlier that year.  "Green Man" has been certified gold by the British Phonographic Industry (BPI) for shipments of 100,000 copies in the United Kingdom.  To date, the album has sold over 1,000,000 copies.

Michael Jackson: The Last Photo Shoot: Michael Jackson: The Last Photo Shoot is an upcoming documentary film directed by Craig J. Williams.  This historical documentary about Michael Jackson's last magazine cover-shoots in 2007.  The film is a unique story told through the eyes of Michael's closest friends, photographers, and stylists that had helped Jackson prepare for his 2007 United States comeback after several years of living in seclusion overseas.  In September of that year, photographer Bruce Weber and "Vogue" fashion editor as well as Jackson's personal stylist Rushka Bergman captured the magic of the King of Pop for the 25th anniversary reissue of his hit album "Thriller", entitled "Thriller 25".  Later that month, Jackson did another shoot and an interview for "Ebony" magazine's December 2007 issue.  This would mark Jackson's first United States interview and magazine story in over a decade.

Supporting paragraphs: Man on Wire To Shoot an Elephant
Answer: Man on Wire