IN: Howard Robard Hughes Jr. (December 24, 1905 - April 5, 1976) was an American business magnate, investor, record-setting pilot, film director, and philanthropist, known during his lifetime as one of the most financially successful individuals in the world. He first made a name for himself as a film producer, and then became an influential figure in the aviation industry. Later in life, he became known for his eccentric behavior and reclusive lifestyle--oddities that were caused in part by a worsening obsessive-compulsive disorder (OCD), chronic pain from several plane crashes, and increasing deafness. As a maverick film tycoon, Hughes gained prominence in Hollywood beginning in the late 1920s, when he produced big-budget and often controversial films like The Racket (1928), Hell's Angels (1930), and Scarface (1932).

The War Production Board (not the military) originally contracted with Henry Kaiser and Hughes to produce the gigantic HK-1 Hercules flying boat for use during World War II to transport troops and equipment across the Atlantic as an alternative to seagoing troop transport ships that were vulnerable to German U-boats. The project was opposed by the military services, thinking it would siphon resources from higher priority programs, but was advocated by Hughes' powerful allies in Washington, D.C. After disputes, Kaiser withdrew from the project and Hughes elected to continue it as the H-4 Hercules. However, the aircraft was not completed until after the end of World War II.  The Hercules was the world's largest flying boat, the largest aircraft made from wood, and, at 319 feet 11 inches (97.51 m), had the longest wingspan of any aircraft (the next largest wingspan was about 310 ft (94 m)). (The Hercules is no longer the longest or heaviest aircraft ever built; both of those titles are currently held by the Antonov An-225 Mriya.)  The Hercules flew only once for one mile (1.6 km), and 70 feet (21 m) above the water, with Hughes at the controls, on November 2, 1947.  The Hercules was nicknamed the Spruce Goose by its critics, but it was actually made largely from birch, not spruce, rather than of aluminum, because the contract required that Hughes build the aircraft of "non-strategic materials". It was built in Hughes' Westchester, California, facility. In 1947, Howard Hughes was summoned to testify before the Senate War Investigating Committee to explain why the H-4 development had been so troubled, and why $22 million had produced only two prototypes of the F-11. General Elliott Roosevelt and numerous other USAAF officers were also called to testify in hearings that transfixed the nation during August and November 1947. In hotly disputed testimony over TWA's route awards and malfeasance in the defense acquisition process, Hughes turned the tables on his main interlocutor, Maine Senator Owen Brewster, and the hearings were widely interpreted as a Hughes victory. After being displayed at the harbor of Long Beach, California, the Hercules was moved to McMinnville, Oregon, where it is now part of the Evergreen Aviation & Space Museum.  On November 4, 2017, the 70th anniversary of the only flight of the H-4 Hercules was celebrated at the Evergreen Aviation & Space Museum with Hughes' paternal cousin Michael Wesley Summerlin and Brian Palmer Evans, son of Hughes radio technology pioneer Dave Evans, taking their positions in the recreation of a photo that was previously taken of Hughes, Dave Evans and Joe Petrali on board the H-4 Hercules.
QUESTION: Is there any other interesting aspects about the hercules?
IN: Kara (Hangul: kara, Japanese: kara, often stylized as KARA) was a South Korean pop girl group formed by DSP Media in 2007. The group's final lineup was composed of Park Gyuri, Han Seungyeon, Goo Hara and Heo Youngji. Members Nicole Jung and Kang Ji-young officially departed from the group in 2014, while Kim Sung-hee left in 2008. The group's name comes from the Greek word "chara" (khara, lit. "joy"), which they interpreted to mean "sweet melody".

The group was scheduled to have their comeback in March 2008 with their second album, however, member Kim Sung-hee suddenly announced that she would be leaving the group due to parental pressure because her participation in the group was contingent on the maintenance of her grades. In response, DSP stated that the second album that was recorded would be shelved and replaced by a mini-album to come in May; in addition, two members would join the group. Auditions were held, and the two new members were eventually revealed to be Goo Ha-ra and Kang Jiyoung. The group made their return in the music industry as a quintet on July 24, 2008 with "Rock U" on M! Countdown. They made their comeback with the "cute" and "playful" image which was the complete opposite of the group's original image from their debut. In the same month, their first mini-album titled Rock U was also released. The second season of Kara Self Camera was premiered on August 18, 2008, which chronicled how the group was adapting to their two new members.  On November 29, 2008, DSP released a teaser video for their upcoming single, "Pretty Girl", which received over 40,000 hits within 12 hours. The full video was released on December 2, 2008 online and was positively received by the public. The EP, Pretty Girl, was released on December 4, embodying a "fun-party" concept. The group began its comeback on all major music shows on December 4, 2008, starting with M! Countdown. During their first national performance on KBS's Music Bank, member Goo Hara accidentally gasped "ah!" live on air due to slipping on falling confetti, and reportedly cried profusely afterwards. The incident became a hot issue to many viewers, but Goo Hara received comfort instead of criticism from the general public.  Park Gyuri attributed their popularity increase to their "pretty but natural" appeal, while media reports gave credit to the band for finally finding its own identity in the music industry since the group's debut and to older male fans, most notably singer Shin Hae Chul. Due to their increasingly hectic schedule as their popularity rose, a few of the group's members were taken to the hospital on December 19 after a Music Bank rehearsal for cold symptoms and exhaustion.
QUESTION:
why did she leave?