Question: What country is Showbox Mediaplex, distributor of the film "Wonderful Radio", based out of?

full_context: Document 1: Lee Min-jung: Lee Min-jung (; born February 16, 1982) is a South Korean actress. She began her career in Jang Jin's stage plays, and for a few years appeared in supporting roles on film and television. She became known after her appearance in "Boys Over Flowers" (2009), and landed her first lead role in family drama "Smile, You" (2009). Lee achieved widespread recognition for her leading role in the romantic comedy "Cyrano Agency" (2010). She also starred in "Wonderful Radio" (2012), "Big" (2012), "Cunning Single Lady" (2014) and "Please Come Back, Mister" (2016).
Document 2: Lovers (TV series): Lovers () is a South Korean television series starring Kim Jung-eun and Lee Seo-jin who play a plastic surgeon and a gangster who enter into an unlikely romance. The series is based on the Lee Man-hee stage play "Turn Around and Leave", the same work that inspired the 1998 blockbuster film "" starring Jeon Do-yeon and Park Shin-yang. It aired on SBS from November 8, 2006 to January 11, 2007 on Wednesdays and Thursdays at 21:55 for 20 episodes.
Document 3: Lee Woo-jung: Lee Woo-jung is a South Korean television screenwriter. Lee is best known for writing the tvN television dramas "Reply" series: "Reply 1997" (2012), "Reply 1994" (2013) and "Reply 1988" (2015–2016). She also wrote the popular variety-reality shows "2 Days & 1 Night", "Qualifications of Men", "Grandpas Over Flowers", "Sisters Over Flowers", "Youth Over Flowers" and "Three Meals a Day".
Document 4: Lotte Entertainment: Lotte Entertainment (Hangul: 롯데 엔터테인먼트) is a South Korean film production and distribution company. Established in the Republic of Korea, the company has distributed films throughout South Korea since their founding in September 2003. It is a subsidiary company of Lotte Group.
Document 5: Dobox: Dobox is an entertainment on-demand (EOD) video and music streaming service. Dobox started as an indigenous, Nigerian-only, video streaming company, and began streaming other categories of movies in 2014. The company was established March 24, 2013 with its headquarters in Lagos, Nigeria. Dobox as partners with big telecommunications giants in Africa like MTN, Airtel, Glo and Etisalat.
Document 6: S.M. Entertainment: S.M. Entertainment () is a South Korean entertainment company established in 1995 by Lee Soo-man. It is currently one of the largest entertainment companies in South Korea. The company operates as a record label, talent agency, music production company, event management and concert production company, and music publishing house.
Document 7: Showbox: Showbox Mediaplex Co., Inc. () is one of the largest film distribution companies in South Korea, founded in 1996. Showbox is the film investment, production and distribution branch of Mediaplex, Inc., entertainment arm of Orion Group. Its main competitors for domestic box office are CJ Entertainment, Lotte Entertainment, and Next Entertainment World (NEW). Despite having very short history in the industry, they managed to have top 6 of 10 blockbusters in Korean box office history, number 1 being 2012's "The Thieves" and continues to have a series of hits.
Document 8: Love Rain: Love Rain () is a 2012 South Korean television series directed by Yoon Seok-ho. Set in the seventies and the present day, it tells a love story over two generations, with Jang Keun-suk and Im Yoon-ah playing dual roles. It aired on KBS2 from March 26 to May 29, 2012 on Mondays and Tuesdays at 21:55 for 20 episodes.
Document 9: UFO Moviez: UFO Moviez India Limited is India’s largest digital cinema distribution network and in-cinema advertising platform (in terms of numbers of screens). UFO operates India’s largest satellite-based, digital cinema distribution network using its UFO-M4 platform, as well as India’s largest D-Cinema network. UFO Moviez is a pioneer in the electronic delivery of digitized full length feature films and content in theatres via satellite and has transformed the way content is distributed and exhibited across geographies. UFO has also contributed to the revival of single screen cinemas in India and its secure technology has substantially reduced Piracy. Most importantly, UFO has ensured that audiences have ‘day of release’ access to films everywhere. UFO Moviez has so far released more than 11000 films in 22 languages, on its UFO M4-Platform & DCI Network and has conducted over 21 million shows. As on March 31, 2017, UFO Moviez' global network, along with its subsidiaries and associates, spans 6,579 screens worldwide, including 5,105 screens across India & Nepal and 1,474 screens across the Middle East (UAE, Bahrain, Qatar, Oman, Kuwait, Lebanon and Jordan), Israel, Mexico and the USA serviced by its subsidiary Scrabble Entertainment Ltd. Scrabble’s international deployment includes UAE, Bahrain, Qatar, Oman, Kuwait, Lebanon, Jordan and Israel. During the fiscal year 2016, UFO digitally delivered 1,738 movies in 25 languages to 5,034 screens with an aggregate seating capacity of approximately 2.15 Mn viewers spread across 30 States and Union territories in India and in Nepal.
Document 10: CJ E&amp;M Film Division: The CJ E&M Film Division (CJ E&M 영화사업부문 - doing business as CJ E&M Pictures), formerly known as CJ Entertainment (), is a South Korean entertainment company which is involved in film production, investment, distribution and exhibition. It is the largest entertainment company in South Korea and a subsidiary of CJ Group.
Document 11: Wonderful Radio: Wonderful Radio (, also known as Love On-Air) is a 2012 South Korean romantic comedy film, starring Lee Min-jung and Lee Jung-jin. It is about a has-been pop star who is now a radio DJ struggling to boost listener ratings. It was released in theaters on January 5, 2012 by distributor Showbox/Mediaplex, and ran for 120 minutes.
Document 12: MBK Entertainment: MBK Entertainment (Hangul: MBK 엔터테인먼트), is a South Korean entertainment company established in 2007 by Kim Kwang-soo. The label was formerly known as Core Contents Media, established on January 9, 2007 as the entertainment division of CJ E&M Music Performance Division created after the acquisition of Poibos (in July 2006), MAXMP3 and Mediopia (in September 2006).
Document 13: Samsung: Samsung Group (Hangul:  ; Hanja:  ; ] ) is a South Korean multinational conglomerate headquartered in Samsung Town, Seoul. It comprises numerous affiliated businesses, most of them united under the "Samsung" brand, and is the largest South Korean "chaebol" (business conglomerate).
Document 14: Jung Joon-young: Jung Joon-young (born February 21, 1989) is a South Korean singer-songwriter, radio DJ, host, actor, and television personality. He first gained recognition in Mnet's reality television talent show, "Superstar K4" (2012), where he finished third place. In 2013, he became the youngest member of KBS's variety show "2 Days & 1 Night" Season 3. He hosted his own radio program titled MBC FM's "Jung Joon-young's Simsimtapa" (2014) and made his big screen debut in "Love Forecast" (2015). Since 2015, Jung is the lead vocalist of rock band Drug Restaurant, previously known as JJY Band, releasing their first album "Escape to Hangover" in May 2015
Document 15: Volume Up (radio show): Volume Up () is a South Korean radio show currently hosted by Kim Ye-won on KBS 2FM in Seoul and UKBS MUSIC DMB in the provinces, airing everyday at 20:00–22:00 (KST), just right after KBS 2FM News 8PM edition. Known as the "ruler of the dinner time" the show became the highest-rated radio program in its time slot across both AM and FM bandwidths in Seoul. KBS 2FM was South Korea's No. 10 station. Popular for soft music playlist, a short soap opera segment called "Lie to Me" based on the 2011 TV drama of the same title and Yoo's "My Final Message".
ground_truth: South Korea