Question: When did the forces of the people whose ethnic background the Shib Sibs belong to, give up trying to recapture Henderson Field?

full_context: Document 1: Maia Shibutani: Maia Harumi Shibutani was born on July 20, 1994, in New York City. She is the daughter of Chris Shibutani and Naomi Uyemura, both of Japanese descent, who met as Harvard musicians. She has an older brother, Alex Shibutani, who competes with her as her partner in the discipline of Ice Dance. She started figure skating at the age of 4 in 1998 in Old Greenwich, Connecticut, where she was a student at Greenwich Academy in Greenwich, Connecticut.
Document 2: Pacific War: The forces converged in the largest sea battle of World War II up to that point. Over the previous month American destroyers had destroyed 17 of 25 submarines out of Ozawa's screening force. Repeated U.S. raids destroyed the Japanese land-based planes. Ozawa's main attack lacked coordination, with the Japanese planes arriving at their targets in a staggered sequence. Following a directive from Nimitz, the U.S. carriers all had combat information centers, which interpreted the flow of radar data and radioed interception orders to the Hellcats. The result was later dubbed the Great Marianas Turkey Shoot. The few attackers to reach the U.S. fleet encountered massive AA fire with proximity fuzes. Only one American warship was slightly damaged.
Document 3: Guadalcanal campaign: Despite the U.S. victory off Cape Esperance, the Japanese continued with plans and preparations for their large offensive scheduled for later in October. The Japanese decided to risk a one-time departure from their usual practice of only using fast warships to deliver their men and matériel to the island. On 13 October, a convoy comprising six cargo ships with eight screening destroyers departed the Shortland Islands for Guadalcanal. The convoy carried 4,500 troops from the 16th and 230th Infantry Regiments, some naval marines, two batteries of heavy artillery, and one company of tanks.
Document 4: Jenette Maitz: Jenette Maitz (born December 7, 1987) is an American former competitive ice dancer. In 2009, she teamed up with Turkish skater Alper Uçar, coached by Natalia Dubova. They won the Turkish national title and represented Turkey at the 2010 World Championships, placing 26th.
Document 5: Pacific War: With Japanese and Allied forces occupying various parts of the island, over the following six months both sides poured resources into an escalating battle of attrition on land, at sea, and in the sky. Most of the Japanese aircraft based in the South Pacific were redeployed to the defense of Guadalcanal. Many were lost in numerous engagements with the Allied air forces based at Henderson Field as well as carrier based aircraft. Meanwhile, Japanese ground forces launched repeated attacks on heavily defended US positions around Henderson Field, in which they suffered appalling casualties. To sustain these offensives, resupply was carried out by Japanese convoys, termed the "Tokyo Express" by the Allies. The convoys often faced night battles with enemy naval forces in which they expended destroyers that the IJN could ill-afford to lose. Later fleet battles involving heavier ships and even daytime carrier battles resulted in a stretch of water near Guadalcanal becoming known as "Ironbottom Sound" from the multitude of ships sunk on both sides. However, the Allies were much better able to replace these losses. Finally recognizing that the campaign to recapture Henderson Field and secure Guadalcanal had simply become too costly to continue, the Japanese evacuated the island and withdrew in February 1943. In the sixth month war of attrition, the Japanese had lost as a result of failing to commit enough forces in sufficient time.
Document 6: Pacific War: Hard-fought battles on the Japanese home islands of Iwo Jima, Okinawa, and others resulted in horrific casualties on both sides but finally produced a Japanese defeat. Of the 117,000 Japanese troops defending Okinawa, 94 percent died. Faced with the loss of most of their experienced pilots, the Japanese increased their use of kamikaze tactics in an attempt to create unacceptably high casualties for the Allies. The U.S. Navy proposed to force a Japanese surrender through a total naval blockade and air raids.
Document 7: Aimi Kobayashi: She lived in Ube, Yamaguchi Prefecture, Japan until February 2007 and later in Tokyo, started learning the piano at the age of three, played with an orchestra at age seven, and has been receiving tutelage from Yuko Ninomiya since the age of eight.
Document 8: Guadalcanal campaign: The 11,000 Marines on Guadalcanal initially concentrated on forming a loose defensive perimeter around Lunga Point and the airfield, moving the landed supplies within the perimeter and finishing the airfield. In four days of intense effort, the supplies were moved from the landing beach into dispersed dumps within the perimeter. Work began on the airfield immediately, mainly using captured Japanese equipment. On 12 August the airfield was named Henderson Field after Lofton R. Henderson, a Marine aviator who was killed during the Battle of Midway. By 18 August the airfield was ready for operation. Five days' worth of food had been landed from the transports, which, along with captured Japanese provisions, gave the Marines a total of 14 days' supply of food. To conserve supplies, the troops were limited to two meals per day.Allied troops encountered a severe strain of dysentery soon after the landings, with one in five Marines afflicted by mid-August. Although some of the Korean construction workers surrendered to the Marines, most of the remaining Japanese and Korean personnel gathered just west of the Lunga perimeter on the west bank of the Matanikau River and subsisted mainly on coconuts. A Japanese naval outpost was also located at Taivu Point, about 35 kilometers (22 mi) east of the Lunga perimeter. On 8 August, a Japanese destroyer from Rabaul delivered 113 naval reinforcement troops to the Matanikau position.
Document 9: Nathan Chen: Nathan Chen Nathan Chen at 2017 US Championships Full name Nathan Chen Country represented United States (1999 - 05 - 05) May 5, 1999 (age 18) Salt Lake City, Utah Height 1.66 m (5 ft 5 ⁄ in) Coach Rafael Arutyunyan, Nadia Kanaeva, Vera Arutyunyan Former coach Marina Zueva, Oleg Epstein, Evgenia Chernyshova, Stephanie Grosscup, Karel Kovar, Amanda Kovar Choreographer Shae - Lynn Bourne, Lori Nichol Former choreographer Nadia Kanaeva, Marina Zueva, Nikolai Morozov, Phillip Mills, Stephanie Grosscup, Evgenia Chernyshova Skating club Salt Lake Figure Skating Training locations Lakewood, California Former training locations Salt Lake City, Utah Lake Arrowhead, California Artesia, California Canton, Michigan Began skating 2002 World standing 3 (As of 24 March 2018) ISU personal best scores Combined total 321.40 2018 World Figure Skating Championships Short program 104.12 2017 Skate America Free skate 219.46 2018 World Figure Skating Championships Medal record (hide) Men's figure skating Representing the United States International competitions Event 1st 2nd 3rd Winter Olympics 0 0 World Championships 0 0 Four Continents Championships 0 0 Grand Prix Final 0 World Junior Championships 0 0 Junior Grand Prix Final 0 World Team Trophy 0 0 Total Olympic Games 2018 Pyeongchang Team World Championships 2018 Milan Singles Four Continents Championships 2017 Gangneung Singles Grand Prix Final 2017 -- 18 Nagoya Singles 2016 -- 17 Marseille Singles World Team Trophy 2017 Tokyo Team World Junior Championships 2014 Sofia Singles Junior Grand Prix Final 2015 -- 16 Barcelona Singles 2013 -- 14 Fukuoka Singles
Document 10: Guadalcanal campaign: Surprised by the Allied offensive, the Japanese made several attempts between August and November to retake Henderson Field. Three major land battles, seven large naval battles (five nighttime surface actions and two carrier battles), and almost daily aerial battles culminated in the decisive Naval Battle of Guadalcanal in early November, with the defeat of the last Japanese attempt to bombard Henderson Field from the sea and to land with enough troops to retake it. In December, the Japanese abandoned their efforts to retake Guadalcanal, and evacuated their remaining forces by 7 February 1943, in the face of an offensive by the U.S. Army's XIV Corps.
Document 11: Guadalcanal campaign: The Guadalcanal campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by American forces, was a military campaign fought between 7 August 1942 and 9 February 1943 on and around the island of Guadalcanal in the Pacific theater of World War II. It was the first major offensive by Allied forces against the Empire of Japan.
Document 12: Kelela: A second-generation Ethiopian American and an only child, Mizanekristos was born in Washington, D.C. on June 4, 1983. Growing up in Gaithersburg, Maryland, she learned to play the violin in fourth grade and sang in her school's choir. In 2001, she graduated from Magruder High School. After transferring from Montgomery College to the American University, Mizanekristos began singing jazz standards at cafés. In 2008, she joined an indie band called Dizzy Spells and sang progressive metal after meeting Tosin Abasi, whom she later dated. In 2010, she moved to Los Angeles, where she currently lives, in addition to London.
Document 13: Gina Rodriguez: Gina Alexis Rodriguez was born in Chicago, Illinois, the youngest daughter of Puerto Rican parents: Magali and Genaro Rodríguez, a boxing referee. She is the youngest of three sisters. She was raised in the Belmont Cragin neighborhood on Chicago's Northwest Side. At the age of seven, Rodriguez performed at the salsa dance company Fantasia Juvenil. Rodriguez was raised Catholic, and attended high school at St. Ignatius College Prep. She continued dancing salsa until age 17.
Document 14: Pacific War: Japanese land forces continued to advance in the Solomon Islands and New Guinea. From July 1942, a few Australian reserve battalions, many of them very young and untrained, fought a stubborn rearguard action in New Guinea, against a Japanese advance along the Kokoda Track, towards Port Moresby, over the rugged Owen Stanley Ranges. The militia, worn out and severely depleted by casualties, were relieved in late August by regular troops from the Second Australian Imperial Force, returning from action in the Mediterranean theater. In early September 1942 Japanese marines attacked a strategic Royal Australian Air Force base at Milne Bay, near the eastern tip of New Guinea. They were beaten back by Allied (primarily Australian Army) forces.
Document 15: Maia Hirasawa: She was born and raised in Sollentuna, Stockholm, Sweden but has lived for many years in Gothenburg. Maia became known through Annika Norlin's band Hello Saferide, where she is a back-up singer. Her solo career began in early 2007 when the song "And I Found This Boy" started being played heavily on Swedish radio. The single was followed up by the album "Though, I'm Just Me" and the single "Gothenburg". During the summer of 2007 she toured around Sweden, playing at such shows as Allsång på Skansen, Hultsfredsfestivalen, Peace & Love and Arvika Festival. In 2010 she for the first time released material in Swedish with the EP "Dröm bort mig igen".
ground_truth: February 1943
sub_queries: what is the ethnic background of the shib sibs Answer: Japanese
When did the Japanese give up trying to recapture Henderson Field? Answer: February 1943