Question: Da Big Show was set to replace a show that aired on which broadcasting system ?

Context paragraphs:
WGAM: WGAM (1250 AM) and WGHM (900 AM) are simulcasting radio stations broadcasting an oldies format named "Oldies Radio WGAM".  WGAM is licensed to Manchester, New Hampshire, WGHM to Nashua, New Hampshire, United States.  The stations serve southern New Hampshire.  The stations are locally owned by Absolute Broadcasting, LLC and previously featured ESPN Radio programming like Mike and Mike, along with "The Dan Patrick Show" and some local programming; the station has also been an affiliate for Boston Red Sox games, Boston Bruins games, Notre Dame Football games and Westwood One sports programming.  Starting September 15, 2014, WGAM added the Glenn Ordway streaming show "Big Show Unfiltered" weekdays at 3 p.m.  After Ordway ended his show, the station returned to locally produced sports talk in the afternoons, early evenings and weekends.  The station is known for devoting many hours per week covering local high school sports with play by play of individual games as well as a weekly compilation show featuring up to a dozen correspondents reporting live from high school games across the state.  Several station alumni have gone on to prominent sports broadcasting careers including Mike Mutnansky, Rich Keefe and Christian Arcand on Boston's WEEI-FM.

Mobile Suit Gundam SEED Destiny: Mobile Suit Gundam SEED Destiny (Japanese: 機動戦士ガンダムSEED DESTINY , Hepburn: Kidō Senshi Gandamu Shīdo Desutinī ) is an anime television series, a direct sequel to "Mobile Suit Gundam SEED" by Sunrise and the overall tenth installment in the "Gundam" franchise.  It retains most of the staff from "Gundam SEED", including Director Mitsuo Fukuda.  Set two years after the original "Mobile Suit Gundam SEED", the plot follows the new character Shinn Asuka, a soldier from ZAFT, composed of humans born genetically enhanced labelled as Coordinators.  As ZAFT is about to enter into another war against the regular human race, the Naturals, the series focuses on Shinn's as well as various returning characters' involvement in the war.  The series spanned 50 episodes, aired in Japan from October 9, 2004, to October 1, 2005, on the Japan News Network television stations Tokyo Broadcasting System and Mainichi Broadcasting System.

Evangelische Omroep: Evangelische Omroep (EO, English: "Evangelical Broadcasting") is one of the twelve member-based broadcasting associations contributing to the Netherlands Public Broadcasting system.  It has as its mission to bring people into contact with Jesus Christ and its statement of faith is a form of Evangelicalism.  EO is one of the few broadcasting associations in the "pillarized" Dutch broadcasting system to have remained totally faithful to its religious roots.  For a long time every one of its programmes made reference to God and to the Christian religion, although this is less often the case in the 21st century.

Kamen Rider Black: Kamen Rider Black (仮面ライダーBLACK , Kamen Raidā Burakku ) , translated as "Masked Rider Black", is a tokusatsu superhero-drama television series.  It is the eighth installment in the famous Kamen Rider Series of tokusatsu shows.  It is a joint collaboration between Ishimori Productions and Toei, and aired on the Mainichi Broadcasting System and the Tokyo Broadcasting System from October 4, 1987 to October 9, 1988.  With its very dramatic storyline and its twist of the Kamen Rider having a tragic relationship with his nemesis, the installment not only became very popular in Japan, but also in many countries where it was aired.  The series is often regarded as a TV classic and is considered by many as the most popular Kamen Rider show of the late 1980s, as well as one of the most famous of all Kamen Riders in the Showa Period.  The series also received a Manga adaptation. " Kamen Rider Black RX" was a direct sequel to this series.

Da Big Show: Da Big Show is a game show broadcast on the Philippine television network GMA Network and it began airing on April 21, 2008.  It is hosted by singer and songwriter, Ogie Alcasid.  It was set to replace Takeshi's Castle (earlier on Weekends).

Takeshi's Castle: Takeshi's Castle (風雲！たけし城 , Fūun!  Takeshi-jō , literally "Showdown!  Takeshi Castle") is a Japanese game show that aired between 1986 and 1990, on the Tokyo Broadcasting System.  It featured the Japanese actor Takeshi Kitano (also known as Beat Takeshi) as a count who owns a castle and sets up difficult challenges for players (or a volunteer army) to get to him.  The show has become a cult television hit around the world.  A special live "revival" was broadcast on April 2, 2005, for TBS's 50th anniversary celebrations.

List of Code Geass episodes: "Code Geass" (Japanese: コードギアス , Hepburn: Kōdo Giasu ) is a Japanese anime series produced by Sunrise, Mainichi Broadcasting System, and Project Geass.  The first season is entitled, "" (コードギアス 反逆のルルーシュ , Kōdo Giasu: Hangyaku no Rurūshu ) and premiered on Mainichi Broadcasting System on October 6, 2006 and was broadcast by a total of ten stations.  Its final two episodes were aired on July 29, 2007.  It was followed by "" (コードギアス 反逆のルルーシュ R2 , Kōdo Giasu: Hangyaku no Rurūshu R2 ) which aired on April 6, 2008 and was broadcast on sixteen stations.  Its final episode aired on September 28, 2008.

List of Mobile Suit Gundam SEED Destiny episodes: "Mobile Suit Gundam SEED Destiny" is the anime sequel to "Mobile Suit Gundam SEED" produced by Sunrise and directed by Mitsuo Fukuda.  The series spanned 50 episodes, aired in Japan from October 9, 2004 to October 1, 2005 on the Japan News Network television stations Tokyo Broadcasting System and Mainichi Broadcasting System.  Set two years after the original "Mobile Suit Gundam SEED", the plot follows the new character Shinn Asuka, a soldier from ZAFT, composed of humans born genetically enhanced labelled as Coordinators.  As ZAFT is about to enter into another war against the regular human race, the Naturals, the series focuses on Shinn's as well as various returning characters' involvement in the war.

Glenn Ordway: Glenn Ordway (born January 16, 1951) is an American sports radio and television personality based in the Boston, Massachusetts area.  He is a former commentator for the Boston Celtics radio broadcasts.  He hosted WEEI-FM's "The Big Show" until February 15, 2013.  On March 17, 2014 he launched "The Big Show Unfiltered"; on SportstalkBoston.com.  Ordway had broadcast on ESPN New Hampshire Radio Nashua/Manchester from June 2014 until May 2015 when he left The Big Show.  Ordway then left ESPN NH unannounced to return to WEEI 10a-2p week days.  Ordway is originally from Lynn, Massachusetts; he graduated from Lynn Classical High School.  Ordway is back on WEEI as of September 8, 2015, as part of a midday show with Lou Merloni and Christian Fauria.

Kamen Rider Black RX: Kamen Rider Black RX (仮面ライダーBLACK RX , Kamen Raidā Burakku Āru Ekkusu , "Masked Rider Black RX") is a Japanese tokusatsu superhero television series produced as part of the Kamen Rider Series.  The ninth show in the franchise, it is a joint collaboration between Ishimori Productions and Toei Company, and aired on the Mainichi Broadcasting System and the Tokyo Broadcasting System from October 23, 1988 to September 24, 1989.  The series is a direct sequel to "Kamen Rider Black" and the first to feature a team-up with the past Riders since the 1984 TV special "Birth of the 10th!  Kamen Riders All Together!! ".

Supporting paragraphs: Da Big Show Takeshi's Castle
Answer: the Tokyo Broadcasting System