Question: Quiz Show Q is hosted by the South Korean singer who signed with what company in 2007?

Context paragraphs:
Quiz Show Q: Quiz Show Q (Hangul: 최강연승 퀴즈쇼 Q ), also known under the direct translation, Strongest Victor Quiz Show Q, is a South Korean television quiz show broadcast by the Munhwa Broadcasting Corporation.  It is hosted by comedian Park Myeong-su, singer IU, and host Sun Bom Soo.

Daantjie Badenhorst: Daniel Streicher Badenhorst (born 6 December 1967), better known as Daantjie Badenhorst and nicknamed Daantjie Dinamiet (Daantjie Dynamite), is a South African quiz show champion, journalist and author.  He is known for winning series 24 of the long-running Afrikaans language television musical quiz show, "Noot vir Noot", and later also won the 2005 edition of ""Flinkdink"", a televised Afrikaans language general knowledge quiz show.

Twenty One (game show): Twenty One is an American game show originally hosted by Jack Barry which aired on NBC from 1956 to 1958.  Produced by Jack Barry-Dan Enright Productions, the program became notorious for being a rigged quiz show which nearly caused the demise of the entire genre in the wake of United States Senate investigations.  The 1994 movie "Quiz Show" is based on these events.  A new version aired in 2000 with Maury Povich hosting, lasting about four months, again on NBC.

That! Medical Quiz Show: That!  Medical Quiz Show is a half-hour radio quiz show hosted by Dr. T. Glenn Pait and co-hosted by Lisa Cornwell that quizzes contestants on medically related issues and topics.  It is produced in the US and broadcasts online and on various NPR affiliate stations.

Mastermind India: Mastermind India is an Indian television quiz show based on the British quiz show "Mastermind".  It originally aired on BBC World's ""Made in India"" series between 1998 and 2002.  Each round saw four contestants taking the black chair one by one, and facing rapid fire questions on subjects of their own choosing in the first half, and on general knowledge in the second half.  One of the hallmarks of the Indian show was the staging of the contest at heritage sites across the country.  For example, in 1999 the semi-finals were held at the Ferozshah Kotla in Delhi, and the finals were held at the City Palace, Jaipur.  Mastermind India was hosted by Siddhartha Basu and had five seasons, the last one being in 2002.

Bob Dyer: Robert Neal Dyer OBE (22 May 19099 January 1984), who took the stage name of Bob Dyer, was a Gold Logie-award-winning American-born vaudeville entertainer and singer, radio and television personality, and radio and television quiz show host who made his name in Australia.  Dyer is best known for the long-running radio and then television quiz show, "Pick a Box".  At the height of his radio career, Dyer and his friend and rival, Jack Davey, were regarded as Australia's top quiz comperes.

Blokken: Blokken "(Blocks)" is a Belgian quiz show based on the Tetris video game.  It is broadcast by Eén and hosted by popular Belgian television personality Ben Crabbé.  The show is currently the longest running quiz show on Belgian television (22 seasons so far).  On 13 April 2013 the show aired its 4000th episode.

Ricki Wertz: Ricki Wertz (born 1935) is a television personality from Pittsburgh, Pennsylvania.  She is an alumna of La Roche College.  In 1958 she hosted a popular children's morning program, "Comedy Time".  In 1959 that show was renamed "Ricki & Copper" when Ricki's dog, Copper, joined the cast.  The show continued to be broadcast until 1969.  From 1965 to 1982 she also hosted "Junior High Quiz" on Sunday afternoons.  "Junior High Quiz" showcased two teams of eighth grade students from local junior high schools.  The students had to answer a series of questions to score points for their teams.  The quiz show was sponsored by Pittsburgh National Bank (in fact, the scoreboard was shaped like the bank's old triangular logo).  Both "Ricki & Copper" and "Junior High Quiz" were broadcast on WTAE-TV Channel 4.  Ricki Wertz moved to WQED-TV Channel 13 in 1982.  There she hosted a documentary series, "Chemical People", which focused on drug-addicted persons, and "Project Literacy U.S.", another documentary addressing literacy in the USA.

IU (singer): Lee Ji-eun (Korean: 이지은 ; born May 16, 1993), better known by her stage name IU (Korean: 아이유 ), is a South Korean singer, songwriter and actress.  While still in middle school, IU auditioned for various talent agencies with ambitions of becoming a singer.  She signed with LOEN Entertainment in 2007 as a trainee and began her music career at the age of 15 with her debut album, "Lost and Found".  Her follow-up albums, "Growing Up" and "IU...IM", brought her mainstream success, but it was through "Good Day" (Korean: 좋은 날 ), the lead single from her 2010 album "Real", that she achieved national stardom.  "Good Day" spent five consecutive weeks at the top position of South Korea's Gaon Digital Chart and holds the record for spending the most number of weeks at No. 1 along with Psy's "Gangnam Style".

Dr. I.Q.: Dr. I.Q. (aka Dr. I.Q., the Mental Banker and Doctor I.Q.) is a radio and television quiz program.  Remembered as radio's first major quiz show, it popularized the catch phrase "I have a lady in the balcony, Doctor."

Supporting paragraphs: Quiz Show Q IU (singer)
Answer: LOEN Entertainment