Question: Who claimed responsibility for the hotel attack that killed Carsten Thomassen?

full_context: Document 1: Erroneous reporting on the 2008 Mumbai attacks: During and immediately after the 2008 Mumbai attacks the news media worldwide broadcast incorrect factual information on a scale often seen in a fog of war. Erroneous reporting on the 2008 Mumbai attacks included false information concerning the number of attackers, their nationality, their organizational affiliations, origins, and the methods of transport they had used. Theories and speculations were openly aired by various commentators that were later proved to be wrong. Many such speculations, such as the involvement in the attacks of the "Deccan Mujahideen", were widely reported by media worldwide. Various news outlets carried opinion pieces and unattributed theories about the origins of the attackers which were unfounded.
Document 2: December 2010 Bajaur bombing: On 25 December 2010, at least 47 people were killed and over 100 others injured, after a female suicide bomber detonated her explosives in a large crowd of people displaced by fighting, who were collecting food at a distribution centre of the World Food Programme in the Pakistani town of Khar, which is located within the Bajaur tribal region, of north-western Pakistan. It was later reported by witnesses, that the bomber dressed in a full-length burka had reportedly thrown a grenade after resisting search, to which then the bomber proceeded to detonate her explosives. Several police officials confirmed the bomber was a woman, as opposed to the more likely occurrence of a man wearing the burka as a disguise, in order to successfully conduct this suicide attack. It was also known that those in this crowd were predominantly displaced members of the Salarzai Tribe, which has supported Pakistan Army operations against the Pakistani Taliban within the Bajaur tribal regions. Those dozens of people injured in this suicide attack were apparently later taken to local hospitals via means of helicopters. Local Witnesses, including that of a government official at the main government hospital within the region, Dosti Rehman, claimed that he had personally counted some 40 bodies. However there are concerns that the death toll could very likely rise, as the official stated that several of those injured, as a result of this suicide attack were apparently in a critical condition at the local hospitals. This particular bombing acts as one of a string of recent suicide attacks, which have occurred with near impunity, predominantly throughout Pakistan's north-western, Khyber Pakhtunkhwa Province, of north-western Pakistan. No particular militant group has of yet claimed responsibility for this suicide attack, although the Pakistani Taliban are strong suspects. The Bajaur tribal region has reportedly seen several Pakistan Army military operations in recent years, however such suicide attacks still continue throughout the region with near impunity. The Pakistani Prime Minister, Yousaf Raza Gillani later condemned this suicide attack, and claimed that such military offensives would continue against the Pakistani Taliban. This statement will be met with a certain degree of approval in the U.S, as Pakistan has recently been pressured to launch a major ground-offensive in the nearby North Waziristan tribal region, in order to root-out and destroy the last major remaining safe-haven for Radical Islamist and Pakistani Taliban insurgents within the country. The U.N World Food Programme later suspended its food distribution activities in the Bajaur tribal region, as a security precaution to this suicide attack. This suicide bombing was strongly condemned by U.S president, Barack Obama. The Pakistani Taliban later claimed responsibility for this suicide attack. This suicide bombing was officially declared the first such suicide attack to involve a female in Pakistan.
Document 3: Vishal Arora: Vishal Arora is a journalist, writer, photojournalist, and videographer, based in New Delhi, India. He used to be the Features Editor of "The Caravan", a fortnightly journal of politics and culture published from Delhi, and an editor at Indo-Asian News Service. Arora writes on politics, religion, culture, human rights and foreign affairs in south and south east Asia for national and foreign media. Arora is particularly known for his coverage of Bhutan, Nepal, Burma, Indonesia, Sri Lanka and the Maldives. Arora's articles have appeared in "The Guardian, The Washington Post, The Wall Street Journal, Nikkei Asian Review, The Diplomat, The Huffington Post, USA Today, Daily Caller, World Politics Review, Foreign Policy in Focus, Hindustan Times, The Indian Express, The Deccan Herald, The Tribune, The Statesman", Mint, Indo-Asian News Service, Sify.com, Swagat, The International Indian (UAE), Compass Direct News (U.S.), Religion News Service (U.S.), and Religious Intelligence (UK).
Document 4: 2017 al-Jinah airstrike: On 16 March 2017, an airstrike by the United States Armed Forces killed up to 49 people in the rebel-held village of al-Jinah near Aleppo, Syria. The US military claimed the people targeted were militants belonging to the terrorist group al-Qaeda. However, the Syrian Observatory for Human Rights (SOHR), local residents and local officials have claimed that the building struck was a mosque filled with worshipers. At the time, US military claimed that the structure bombed was not a mosque itself but was next to a mosque, which was undamaged. However, on May 5, 2017, a US Central Command investigation determined that the building was indeed part of a mosque-complex. Rami Abdel Rahman, head of SOHR, claimed the structure was a mosque which held over 300 people at the time of the strike.
Document 5: Carsten Thomassen (journalist): Carsten Thomassen (15 May 1969 – 14 January 2008) was a Norwegian journalist, political commentator and war correspondent for the Norwegian daily newspaper "Dagbladet". He had earlier covered the 2004 Indian Ocean earthquake from Thailand and Indonesia. He was killed in the 2008 Kabul Serena Hotel attack in Kabul, Afghanistan.
Document 6: Ingrid Carlqvist: Ingrid Kristina Carlqvist (born November 9, 1960) is a Swedish writer, editor and journalist. Together with Lars Hedegaard, she ran the now discontinued newspaper "Dispatch International". According to Carlqvist, the newspaper was critical of Islam and its purpose was to report on what was not reported in the mainstream media. She writes extensively about immigration and assimilation problems in Sweden. She wrote for the Gatestone Institute until 2016. In February 2017, she was engaged in the capacity of expert by Fox News. In March 2017 she came under attack for questioning 'why it was so sensitive to discuss the evidence surrounding the Holocaust'.
Document 7: Karen Maron: Karen Marón is an Argentine journalist, war correspondent, producer, international analyst and writer, renowned as one of the TOP 100 most influential war correspondents in the world in covering armed conflicts , with coverage in more than 30 countries since 2000. As international correspondent specialized in armed conflicts and international politics she has covered conflicts in the Middle East, Latin America, Persian Gulf including the most dangerous places of the world as Iraq, Syria, Lebanon, Colombia, Libya and the Israeli–Palestinian conflict from the Second Intifada up to Israel's military offensive on Gaza Strip.
Document 8: Charles Thomson (journalist): Charles Thomson (born 18 April 1988) is a multi-award-winning journalist from Great Britain. He has won accolades for his investigative journalism, feature-writing, court reporting and campaigning. His stories have been published by media outlets including "The Sun", "The Mirror", "The Guardian", "MOJO", "Wax Poetics" and the "Huffington Post". His past interviewees include music legends Martha Reeves, Eddy Grant, George Clinton and James Brown. He has also contributed to two popular biographies of Michael Jackson. His specialisms include the justice system and black music.
Document 9: Mazen Dana: Mazen Dana (Arabic: مازن دعنا‎ ‎ , 1962—17 August 2003) was a Palestinian journalist who worked as a Reuters cameraman. He spent a decade covering the Israeli-Palestinian conflict in Hebron in the West Bank, for which he was awarded the 2001 International Press Freedom Award of the Committee to Protect Journalists. He was shot and killed by US soldiers in Baghdad, Iraq on 17 August 2003.
Document 10: September 2016 Kabul attacks: Explosions in Kabul on September 5, 2016 killed over 41 people and injured 103 others in twin suicide bombings near the Afghan defense ministry. Hours later, another huge explosion was heard. The Taliban claimed the first attack and said that their suicide bomber killed 58 people. Reportedly an army general and one district police chief were killed in the blast. Attacks lasted overnight with a siege and hostage situation. At least one person was killed and six injured in another attack on a charity CARE International building in Shāre Naw. The attack was claimed by the Taliban, with at least 3 of their attackers being killed and 42 hostages being rescued.
Document 11: 2008 Kabul Serena Hotel attack: The 2008 Kabul Serena Hotel attack was an attack on the gym of the Kabul Serena Hotel, in Kabul, Afghanistan on January 14, 2008 for which the Taliban claimed responsibility.
Document 12: Carsten Thomassen: Carsten Thomassen (born August 22, 1948 in Grindsted) is a Danish mathematician. He has been a Professor of Mathematics at the Technical University of Denmark since 1981, and since 1990 a member of the Royal Danish Academy of Sciences and Letters. His research concerns discrete mathematics and more specifically graph theory.
Document 13: 2014 Kabul Serena Hotel attack: The 2014 Kabul Serena Hotel attack was a mass shooting at the restaurant of the Kabul Serena Hotel, in Kabul, Afghanistan on March 20, 2014 for which the Taliban claimed responsibility. Four teenage gunmen entered the restaurant of the hotel, opening fire with handguns against patrons and sparking a three-hour standoff with Afghan security forces. At least nine people were reported killed in the assault, including five Afghans and four foreigners. Among the victims was former Paraguyan diplomat Luis Maria Duarte, who was in the country as an international observer in the upcoming Presidential elections. Afghan authorities later announced that four women and two children were among the victims, which included nationals of New Zealand, Pakistan, India and Canada. At least two of the hotel's security guards were injured during the assault as well.
Document 14: Operation Janbaz: The Pakistan Army General Headquarters attack (Codename: Operation Janbaz; Urdu: فوجی آپریشن جانباز‎ ), was a hostage-rescue mission carried by SSG Division during which, on 10 October 2009, when 10 gunmen in military uniform opened fire on the General Headquarters in Rawalpindi, Punjab, Pakistan. The attack killed nine soldiers, nine militants and two civilians and was a major escalation in Pakistan's domestic insurgency. One militant was wounded and captured by security forces. Soon after the attack, the militant infiltrated the security buildings where 22 civilian and military officials were held hostage by the militants. The Pakistan Army immediately launched a hostage rescue operation led by the SSG Division, Army Special Forces and the 13th Regular Regiment.
Document 15: Camp Chapman attack: The Camp Chapman attack was a suicide attack by Humam Khalil Abu-Mulal al-Balawi against the Central Intelligence Agency facility inside Forward Operating Base Chapman on December 30, 2009. FOB Chapman is located near the eastern Afghanistan city of Khost, which is about 10 miles northwest of the border with Pakistan. One of the main tasks of the CIA personnel stationed at the base was to provide intelligence supporting drone attacks against targets in Pakistan. Seven American CIA officers and contractors, an officer of Jordan's intelligence service, and an Afghan working for the CIA were killed when al-Balawi detonated a bomb sewn into a vest he was wearing. Six other American CIA officers were wounded. The bombing was the most lethal attack against the CIA in more than 25 years.
ground_truth: the Taliban