Question: What channel, owned and operated by Turner Broadcasting System Europe, had a sister station that closed 1 April 2014?

full_context: Document 1: Cartoon Network (UK &amp; Ireland): Cartoon Network (commonly abbreviated as CN) is a British television channel available on Sky, Virgin Media, Smallworld Cable, TalkTalk Plus TV, UPC Ireland and TVPlayer (When subscribed to TVPlayer). The channel is owned and operated by Turner Broadcasting System Europe (a semi-autonomous unit of Time Warner).
Document 2: Cartoon Network Too: Cartoon Network Too was a British TV network created by Turner Broadcasting. CN Too is the sister station of Cartoon Network, and it often aired programmes a while after they are shown on the main Cartoon Network. During the daytime, it usually aired some action-adventure programming such as "" and "". During overnight hours, usually between midnight and 06:00, it also aired some shows which are no longer being produced, and are no longer in high demand (i.e. "Skatoony"). Cartoon Network Too was closed on 1 April 2014.
Document 3: Cartoon Network: Cartoon Network is an American basic cable and satellite television channel that is owned by The Cartoon Network, Inc., a subsidiary of Turner Broadcasting System, itself being a subsidiary of Time Warner. It was founded by Betty Cohen and launched on October 1, 1992.
Document 4: Cartoon Network (Middle East and Africa): Cartoon Network refers to two digital children's TV channels broadcasting animated programs: Cartoon Network MENA, which serves the Middle East and North Africa region (excluding Israel, Iran and Turkey) along with Cyprus; and Cartoon Network Africa (formerly known as Cartoon Network HQ), which serves Sub-Saharan Africa. Cartoon Network was created by Turner Broadcasting System, a unit of Time Warner. Cartoon Network UK/Europe (the direct precursor to Cartoon Network feeds in the EMEA region, including Cartoon Network HQ) was launched on September 17, 1993. In October 1999, Cartoon Network UK became a separate feed from Cartoon Network HQ, but initially had a nearly identical schedule to Cartoon Network HQ until the latter became completely independent from the UK feed in 2001.
Document 5: Cartoon Network (Poland): Cartoon Network Poland is a Polish language cartoon channel broadcasting to people in Poland. The channel launched on 1 September 1998 on 12:00 am local time. Since 1 March 2007, it's been broadcast 24 hours a day. On 30 September 2002 the channel began to air in Hungary and Romania. On 1 October 2008 a separate channel was created for Hungary & Romania. Both are transmitted from Warsaw. There was previously a Polish, Romanian, Hungarian and English audio track available. Currently there's only a Polish and English audio track. The channel is owned by Turner Broadcasting System Europe. The channel also carried a Toonami programming block.The channel works with some Polish dubbing studios: Studio Sonica, Start International Polska, SDI Media Polska, Master Film and Studio Genetix Film Factory. On 1 September 2016, Cartoon Network Poland re-branded using graphics from the Check It 4.0 branding package.
Document 6: Adult Swim: Adult Swim (stylized as [adult swim]) is the adult-oriented nighttime programming block of American children's cable network, Cartoon Network, that operates daily from 8:00 pm to 6:00 am, Eastern and Pacific Time. It is programmed by Williams Street Productions, a subsidiary of Turner, which also developed two other programming blocks for Cartoon Network: Toonami (which later became a block on Adult Swim in 2012) and Miguzi. The block gets its name from a phrase used by public swimming pools in the United States to label designated times when children are restricted from using the facilities in favor of adults.
Document 7: Cartoon Network (Japan): Cartoon Network (Japanese: カートゥーン ネットワーク , Hepburn: Kātūn Nettowāku ) is a Japanese cable and satellite television channel that mostly airs children's animated television series. As a Japanese version of the eponymous television channel in the United States, Cartoon Network broadcasts original series from its U.S. counterpart, as well as several Japanese animated media and other non-Japanese programs. An amount of non-Japanese programs are also available in English via secondary audio feed. It is one of few versions of Cartoon Network outside U.S. that broadcasts its programs in High Definition.
Document 8: CNX (TV channel): CNX (or sometimes known as Cartoon Network Extreme) was a channel operated by Turner Broadcasting System Europe in the UK and Ireland between 2002 and 2003. It was aimed at a male audience, with daytime programming aimed at older children and teenagers (predominantly 12–18 years of age), and evening programming aimed at older teenagers and young adults (the 17-34 demographic). The channel was carried in the 'Entertainment' section of the Sky programme guide, and was also available on cable.
Document 9: Toon Disney: Toon Disney was a worldwide digital cable and satellite television channel brand that was owned by the Disney Channels Worldwide, a subsidiary of Disney–ABC Television Group. A spin-off of the Disney Channel, the channel mostly aired children's animated series and some live action programming. Its format had similarities to those of Discovery Kids, Cartoon Network, and Nicktoons. The channel's target audience was children ages 2–11, and children ages 7–14 during its nighttime block called Jetix. Toon Disney shut down on February 13, 2009, after nearly 11 years, and was replaced by Disney XD, which has carried some programs previously seen on Toon Disney.
Document 10: Nicktoonsters: Nicktoonsters was a short-lived television channel in the United Kingdom & Ireland, which launched on 18 August 2008 on Sky. It was a spinoff channel of Nicktoons. Its license first appeared on the OFCOM website in September 2007 (initially named "Nicktoons 2", this was changed to Nicktoonsters on 3 July 2008). The network was targeted to 5-11 year old children and aired mainly older library content from Nicktoons, broadcasting twelve hours per day from 7:00 a.m. to 7:00 p.m. daily, with Comedy Central Extra +1, a one-hour timeshift service of Comedy Central Extra taking the other twelve hours in a channel-sharing arrangement upon the launch of Nicktoonsters (CCE+1 had previously been a 24-hour feed).
Document 11: Cartoon Network (Pakistan): Cartoon Network Pakistan is a cable and satellite television channel created by Turner International Pakistan, a unit of Time Warner which primarily shows animated programming. The channel is Pakistani feed of Cartoon Network, officially launched on 2 April 2004. It is also available in Tajikistan, Bangladesh and Afghanistan. Cartoon Network Pakistan timings are according to PST (+5 UTC).
Document 12: Cartoon Network (Central and Eastern Europe): Cartoon Network CEE (also known as Cartoon Network Czech Republic, Cartoon Network Hungary and Cartoon Network Romania) is a children's channel broadcasting to people in Czech Republic, in Hungary, in Moldova, in Romania and in Slovakia. The channel was launched along with the Romanian and Polish feed. The channel is owned by Turner Broadcasting System Europe. The channel also carried a Toonami programming block. On April 1, 2015, Cartoon Network started broadcasting 24 hours a day in Hungary. Hungary was the last country to get Cartoon Network timeshared with TCM. On August 8, 2016, Cartoon Network Central Eastern Europe started to air Check It 4.0 bumpers and idents (alongside existing Check It 1.0 and Check It 3.0 branding). On September 20, 2017, a Czech sub-feed was launched.
Document 13: Toonami (India): Toonami is a 24-hour channel in India and a former block on India's first kids channel, Cartoon Network. Turner International India, which are both subsidiaries of Time Warner, the owner of India's leading kids' entertainment channels, Cartoon Network and Pogo, launched Toonami on 26 February 2015. On July 1, 2017, Toonami India was re-purposed as a classic animation channel, all action-animation programming was removed, Toonami now airs shows from the Cartoon Network Studios, Hanna-Barbera and Warner Bros. Animation libraries.
Document 14: Cartoonito: Cartoonito is a pre-school brand owned and distributed by Turner, available as dedicated television channels in the United Kingdom, Ireland and Italy, and also as a branded block of content on Boomerang across Europe, the Middle East, and Africa. Cartoonito is available as a dedicated channel in Asia, owned and operated by Turner Broadcasting System Asia Pacific, Inc. and also as a branded block on Cartoon Network Arabic. The brand is aimed at young children under the age of 6 years.
Document 15: Cartoon Network (Portugal): Cartoon Network, commonly abbreviated as CN, is a Portuguese digital cable and satellite television channel launched on December 3, 2013 and owned by Turner Broadcasting System Europe (a semi-autonomous unit of Time Warner). Currently, Cartoon Network is the second most-watched kids and teens' channel in Portugal, recently surpassing Canal Panda and is now only behind Disney Channel.
ground_truth: Cartoon Network