Question: Which documentary was released first, Walking with Cavemen or Life in the Freezer?

full_context: Document 1: Monsters We Met: Monsters We Met is a documentary produced by the BBC and later aired on Animal Planet in 2003 (under the title, Land of Lost Monsters) but also used footage from "Walking with Beasts" and "Walking with Cavemen" both made by BBC. The show used computer-generated imagery to recreate the life of the giant animals that lived during the last ice age and explains how early humans encountered them. It also features humans as the main reason to the extinction of all great animals.
Document 2: Meet the Ancestors: Meet the Ancestors aka Ancestors was a BBC Television documentary series that documented the archaeological excavation and scientific reconstruction of human remains. The series was introduced by archaeologist Julian Richards and often included facial reconstructions by Caroline Wilkinson.
Document 3: The Life of Birds: The Life of Birds is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 21 October 1998.
Document 4: Walking with Cavemen: Walking with Cavemen is a four-part television documentary series about human evolution produced by the BBC in the United Kingdom. It was originally released in April 2003. It was subsequently presented in the United States as a two-part series by the Discovery Channel and its affiliates. There was an accompanying book of the same title.
Document 5: Prehistoric Planet: Prehistoric Planet is a re-version of the BBC's "Walking with Dinosaurs" and "Walking with Beasts" series, done by Discovery Channel and NBC for the Discovery Kids network. Though the producers kept most of the original animation, David Bock and Peter Sherman wrote new text for a younger target audience, narrated by Ben Stiller (in Season 1) and Christian Slater (in Season 2), and interspersed the scenes with occasional quizzes to act as bumpers around the commercial breaks. New music was incorporated as well. Most marketing and advertising for the series focused on the dinosaur episodes. In addition, the final episode, the "Prehistoric Planet Top 10" focused solely on the creatures from "Walking With Dinosaurs". Most of the graphic content from the shows were removed to be more appropriate for children, small content edits were also done to allow original programs to fit in the 23 minutes of non-commercial time that a normal half-hour program has on network TV, resulting in footage from the shows to be trimmed down. Only Season 1 has been released on home video and DVD.
Document 6: Iceland Foods: Life in the Freezer Cabinet: Iceland Foods: Life in the Freezer Cabinet is a British documentary television series about the Iceland supermarket chain that was first broadcast on BBC Two on 21 October 2013. The three-part series was co-produced with the Open University.
Document 7: Life in the Freezer: Life in the Freezer is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 18 November 1993.
Document 8: A Year in the Wild: A Year in the Wild is a 2012 British nature documentary series about the country's national parks. Produced by the BBC, the series is narrated by actress Hermione Norris. It consists of three episodes, each an hour long. The first episode, "Snowdonia", premiered on 27 July 2012 and features Snowdonia National Park. Snowdonia is located in Wales, and is known for its hills and extinct volcanoes. The second episode, "The New Forest", premiered on 3 August 2012. The episode explores the fauna of the New Forest National Park. The Park, located in southern England, was established in 2005 and is one of the country's newest national parks. The final episode of the series, "Cairngorms", premiered on 10 August 2012. The Cairngorms National Park covers the Cairngorms mountain range in Scotland, and is Britain's largest national park, with an area of 4,528 km2. All three episodes describe the wildlife of each park, the ecosystem, and the people who live near, work, or frequent the parks.
Document 9: The Trials of Life: The Trials of Life: A Natural History of Behaviour is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 3 October 1990.
Document 10: Ben Salisbury: Notable television credits include the BAFTA nominated David Attenborough series "The Life of Mammals" and "Life in the Undergrowth", and the BAFTA-winning series "Life in Cold Blood". He was nominated for an Emmy Award for his score for the Wildlife on One film "Operation Dung Beetle"
Document 11: Life in the Undergrowth: Life in the Undergrowth is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the UK from 23 November 2005.
Document 12: Freezing (TV series): Freezing is a BBC comedy series starring Hugh Bonneville and Elizabeth McGovern about an otherwise successful couple in their forties who find themselves out of work. Matt (Bonneville) is a publisher who has recently lost his job and Elizabeth (McGovern) is an Oscar-nominated American actress who is having a hard time getting work since moving to live with Matt in London.
Document 13: Walking with Monsters: Walking with Monsters (also distributed as "Before the Dinosaurs - Walking with Monsters" or "Walking with Monsters - Life Before Dinosaurs") is a three-part British documentary film series about life in the Paleozoic, and briefly into the Mesozoic, bringing to life extinct arthropods, fish, amphibians, synapsids, and reptiles. As with previous "Walking with..." instalments, it is narrated by Kenneth Branagh. Using state-of-the-art visual effects, this prequel to "Walking with Dinosaurs" shows an epic 300 million year war between creatures before the dinosaurs. The series draws on the knowledge of over 600 scientists and depicts Paleozoic history, from the Cambrian Period (530 million years ago) to the Early Triassic Period (248 million years ago). It was written and directed by Tim Haines. As with some of the other BBC specials, it was renamed in North America, where its title was "Before the Dinosaurs: Walking with Monsters". It has also aired as a two-hour special on the Canadian and American Discovery Channel with yet another narrator, although Branagh's narration can still sometimes be heard. At the 58th Primetime Emmy Awards in 2006 it won the Emmy Award in the category Outstanding Animated Program (For Programming One Hour or More).
Document 14: Walking with Beasts: Walking with Beasts (Walking with Prehistoric Beasts in North American releases) is a 2001 six-part television documentary miniseries, produced by the BBC Natural History Unit. It is the second installment of the Walking With... series and a sequel to "Walking with Dinosaurs". "Beasts" takes place after the extinction of the dinosaurs 65 million years ago depicted in "Walking with Dinosaurs", and recreates animals of the Cenozoic with computer-generated imagery and animatronics. Like "Dinosaurs", its narrative is presented in the style of a traditional nature documentary. Some of the concepts it illustrates are the evolution of whales, horses, and humans.
Document 15: The Complete Guide to Prehistoric Life: The Complete Guide to Prehistoric Life is an encyclopedia featuring 111 of the prehistoric animals from the "Walking with..." series, as well as an additional one ("Homo floresiensis"). It was published in 2006 by Firefly Books, and written by Tim Haines with Paul Chambers. It accompanies all programs in the "Walking with..." series except "Walking with Cavemen", "Prehistoric Park" and "Primeval".
ground_truth: Life in the Freezer