Question: Which documentary was released first, Zero Days or Mala Mala?

Context paragraphs:
Tjololo: Tjololo was a male leopard living in the Mala Mala Game Reserve in Mpumalanga Province, South Africa.  He was the subject of the National Geographic documentary film "Stalking Leopards".

Robinson Crusoe of Clipper Island: Robinson Crusoe of Clipper Island (1936) is a Republic Movie serial starring Ray Mala.  It was the fourth of the 66 serials produced by Republic and the last (of four) to be released in 1936.  "Robinson Crusoe of Clipper Island" is notable for being the first Republic serial to contain another common aspect of serials - a Re-Cap Chapter, similar to a clipshow in modern television where the events of the previous chapters are repeated via clips (in order to save money).  This, contrary to popular belief was not the invention of the concept, which had been routinely used in serial production before the release of this serial.  The serial was edited into the film Robinson Crusoe of Mystery Island, which was released in 1966.

Zero Days: Zero Days is a 2016 American documentary film directed by Alex Gibney.  It was selected to compete for the Golden Bear at the 66th Berlin International Film Festival.

Mala vita: Mala vita (Wretched Life) is an opera in three acts composed by Umberto Giordano to a libretto by Nicola Daspuro adapted from Salvatore Di Giacomo and Goffredo Cognetti's verismo play of the same name.  Giordano's first full-length opera, "Mala vita" premiered on 21 February 1892 at the Teatro Argentina.  It was subsequently performed in Naples, Vienna, Berlin and Milan, and other Italian cities over the next two years.  In 1897 a considerably re-worked and revised version under the title "Il voto" (The Vow) premiered in Milan.  Within a few years both versions had disappeared from the repertoire.  Amongst its rare modern revivals was the 2002 performance at the Teatro Umberto Giordano in Foggia which was recorded live and released on the Bongiovanni label.

Mala badal: "'Mala badal' ( Bengali: মালা বদল )is part of the traditional Bengali wedding ceremony that involves the exchange of flower garlands between the bride and bridegroom, and is supposed to mark the first time when the bride and the bridegroom set eyes on each other.  It is a ritual that is carried forward from the past, as the practice of not seeing each other before is hardly practised these days.  Nevertheless, the "mala badal" marks the first time during the wedding that the bride and the groom are allowed to see each other.

Kromestar: Kromestar (real name Ricky Kalsi) is a dubstep record producer from South London.  He is also known for using his other alias 'IronSoul', which he used when he started creating underground grime tracks.  Kromestar is considered to be one of the original dubstep producers and is well respected in the dubstep scene.  Kromestar is most-known for his first album, "My Sound" which gave him the popularity in the dubstep scene.  He later released his second album 2011 "Colourful Vibrations".  In December 2013 he released an album, called "Tears of Joy", inspired by the death of his son, with proceeds going to charity.  He ran a label with Jay 5ive called Bass 'N' Love.  His sound can vary from extremely heavy, mechanised-like to uber chilled and tight, and is known for his precise production.  He has also had releases on Mala's label Deep Medi Musik.

Mala Mala (film): Mala Mala is a 2014 Puerto Rican documentary film directed by Antonio Santini and Dan Sickles, starring Jason "April" Carrión, Samantha Close and Ivana Fred.  This film shows several stories of the transgender community in Puerto Rico, including April Carrion, well-known drag queen who participated in the reality show RuPaul's Drag Race.  Mala Mala also includes the historic victory of the LGBT community with the approval and signature of Law 238-2014 (in Puerto Rico), which prevents discrimination in employment based on sexual orientation and/or gender identity.  Mala Mala has been presented in festivals around the world, including London, Ukraine, Los Angeles, Austin, Costa Rica and Mexico.  In addition to schools such as The Boston Conservatory at Berklee, University of Pennsylvania, New York University and Harvard University.

Eskimo (film): Eskimo (also known as Mala the Magnificent and Eskimo Wife-Traders) is a 1933 American Pre-Code drama film directed by W. S. Van Dyke and released by Metro-Goldwyn-Mayer (MGM).  It is based on the books "Der Eskimo" and "Die Flucht ins weisse Land" by Danish explorer and author Peter Freuchen.  The film stars Ray Mala as Mala, Lulu Wong Wing as Mala's first wife Aba, Lotus Long as Mala's second wife Iva, Peter Freuchen as the Ship Captain, W. S. Van Dyke as Inspector White, and Joseph Sauers as Sergeant Hunt.

Mala (song): "Mala" is the first single from Yolandita's 31st studio album, Mala.  This song was written by Maria Isabel Saavedra and produced by Jose Luis Pagan.  The Yolandita new single “Mala”, was released on October 6, 2008 on national radio.

Once Upon a Time (2013 film): Once Upon A Time is a 2013 Malayalam animated film, directed by Binu Sasidharan and starring Salim Kumar and Mala Aravindan.  Released on 24 May 2013, it is the first animated feature film to be produced in the Malayalam language, and it is Binu's first feature film, opting for a wide theatrical release rather than through domestic release as with his previous works.

Supporting paragraphs: Zero Days Mala Mala (film)
Answer: Mala Mala