Question: Both Tar Creek made in 2009 and The Story of Stuff a short animation about the lifecycle of material goods are what category of film?
Context: Gus is a 2011 Australian computer animated short film produced by Honeydew Studios in Brisbane, Australia.  It is written, directed, animated and produced by Andrew Martin.  The music is composed by Liam Flenady and Lisa Cheney, and the sound design is by John Willsteed.  It has won multiple awards on the international festival circuit, including Best Short Film Script and Best Short Animation at the Monaco International Film Festival, and Best Animation at the Queensland New Filmmakers Awards in 2011.  Gus is Andrew Martin's filmmaking debut and the first production for his company Honeydew Studios. The AACTA Award for Best Short Animation, is a short film award presented by the Australian Academy of Cinema and Television Arts (AACTA) to the producer and director of an Australian short animated film that is "a self-contained and continuous animated film of short fiction or documentary of less than 40 minutes in duration."  Prior to the establishment of the Academy in 2011, the award was presented by the Australian Film Institute (AFI) at the annual Australian Film Institute Awards (more commonly known as the AFI Awards) from 1979–2010.  The award is presented at the AACTA Awards Luncheon, a black tie event which celebrates achievements in film production, television, documentaries and short films. Information good in economics and law is a type commodity whose market value is derived from information it contains.  Examples include CDs containing pieces of music, DVDs containing movie content, and books containing short stories.  Information goods are in contrast to material goods such as clothes, food, and cars.  These can exist in either digitized form or analog format. The Day My Soul Became a Star  is an animated short film by M. Eastling produced by Rex Rey Films.  The film is a rare resource to encourage hopeful conversations between parents and children about the inevitable.  Utilizing an innovative blend of 3D animation with 2D watercolor textures the film's artistic team created the short’s signature look.  The theme song for the short animation is “Satellite” performed by Guster (courtesy of Warner Music Group and Nettwerk management.)  The film was among only 33 films from around the world up for Oscar consideration for the 2008 Academy Awards.  The film is based on a children's book written by Molly Eastling. The Story of Stuff is a short animated documentary about the lifecycle of material goods.  The documentary is critical of excessive consumerism and promotes sustainability. Tar Creek is a 2009 feature-length environmental documentary about the Tar Creek Superfund Site, which at one time was considered the worst environmental disaster in the United States.  It was directed Matt Myers, who also wrote the film's script and served as its narrator. Annie Leonard (born 1964) is an American proponent of sustainability and a critic of consumerism.  She created the animated film "The Story of Stuff" (2007), which describes the life cycle of material goods.  In 2014, she became the Executive Director of Greenpeace USA. A Morning Stroll is an English animated short film by Grant Orchard.  The film was screened at the 2011 Brooklyn Film Festival as well as the 2012 Sundance Film Festival where it won Best Animation and the Jury Prize in Animated Short Film respectively.  The film was also nominated Best Animated Short Film at the 84th Academy Awards as well as Best Short Animation at the 65th British Academy Film Awards. Yinka Edward is an award winning Nigerian cinematographer best known for his works on the films October 1, 93 Days, A Love Story, winner of BAFTA's Best British Short Animation category, 2017, and Confusion Na Wa. Edward Alexander White (born 9 October 1981), known as Eddie White, is an Australian writer/director and co-founder of The People's Republic Of Animation.  White won an Australian Film Institute (AFI) Award for Short Animation for The Cat Piano (2009).  The film was also shortlisted for an Academy Award for Best Short Animated Film in 2010.
Answer: documentary