Question: When was the prince who attended NHH Symposium with The Norwegian king, Harald V  born? 

full_context: Document 1: NHH Symposium: The NHH Symposium is a biennial, two day business conference held at the Norwegian School of Economics (NHH), Bergen, Norway. The inaugural meeting, inspired by the St. Gallen Symposium, was held in 1983. The meeting is convened by volunteer students. Keynote speakers have included Edward Heath and Henry Kissinger. The Norwegian king, Harald V attended in 1995 and +Haakon, Crown Prince of Norway in 2007 and 2009.
Document 2: Princess Astrid, Mrs. Ferner: Princess Astrid, Mrs. Ferner (Astrid Maud Ingeborg; born 12 February 1932 in Oslo, Norway) is the second daughter of King Olav V of Norway and his wife, Princess Märtha of Sweden. She is the older sister of King Harald V of Norway and younger sister of the late Princess Ragnhild.
Document 3: Haakon, Crown Prince of Norway: Haakon, Crown Prince of Norway (] ; Haakon Magnus; born 20 July 1973) is the only son and younger child of King Harald V and heir apparent to the throne of Norway.
Document 4: CC9: In 2008 the Club of Madrid, the Bellona Foundation and the utility company Hafslund ASA joined forces to organize the top level climate conference in Norway called #CC8 (Climate Conference 08: Technology and Finance in Climate Cooperation). In 2009 the same organizers are arranging CC9 (Climate Conference 09: Green Technology and Finance – Striking a Fair Climate Deal) which will take place on 4 and 5 June at Hafslund Manor in Sarpsborg, Norway. It will be followed by a climate festival for children in the adjacent park on 6 June.
Document 5: U.S. – E.E.C. Businessmen’s Conference: The U.S. – E.E.C. Businessmen’s Conference was an outreach initiative of the Chamber of Commerce of the United States which began in November 1970 with a series of exchanges and high-level meetings aimed at reassuring Europe’s business leaders and strengthening trans-Atlantic commercial ties during a period of trade and monetary instability. The turbulence became particularly acute surrounding the August 1971 Nixon Administration decision to decouple the Dollar from gold – a de facto devaluation along with the rise of protectionist sentiment embodied in the Burke-Hartke legislation advanced by American trade unions. After eight months of intense planning and numerous trips to Europe led by Chamber president Archie K. Davis (Chairman of Wachovia Bank) and the Chamber’s international group executive Nicholas E. Hollis, the resultant framework and momentum produced a three-day conference at Versailles outside Paris. The conference convened nearly 100 top industrialists and bankers at the historic Trianon Palace Hotel—and led to the creation of an ongoing organization called the U.S.-E.C. Business Council, as well as laying the foundation for the Trilateral Commission.
Document 6: Prince George of Cambridge: Prince George of Cambridge (George Alexander Louis; born 22 July 2013) is the elder child and only son of Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge. He is third in line of succession to the British throne, after his paternal grandfather, and father.
Document 7: Allen &amp; Company Sun Valley Conference: The Allen & Company Sun Valley Conference is an annual media finance conference hosted and wholly independently funded by private investment firm Allen & Company. The conference has taken place in Sun Valley, Idaho for one week each July since 1983. The conference typically features business leaders, political figures, and major figures in the philanthropic and cultural spheres. Previous conference guests have included Bill and Melinda Gates, Warren and Susan Buffett, Tony Blair, Google founders Larry Page and Sergey Brin, Allen alumnus and former Philippine Senator Mar Roxas, Google Chairman Eric Schmidt, Yahoo! co-founder Jerry Yang, Facebook founder Mark Zuckerberg, Media Mogul Rupert Murdoch, eBay CEO Meg Whitman, BET founder Robert Johnson, Time Warner Chairman Richard Parsons, NBA player LeBron James, Governor Chris Christie, entertainer Dan Chan, Katharine Graham of "The Washington Post", Diane Sawyer, InterActiveCorp Chairman Barry Diller, Linkedin co-founder Reid Hoffman, Sandro Salsano from Salsano Group, and Washington Post CEO Donald E. Graham, and Oprah.
Document 8: Haakon IV of Norway: Haakon Haakonsson (c. March/April 1204 – 16 December 1263) (Old Norse: "Hákon Hákonarson"; Norwegian: "Håkon Håkonsson"), sometimes called Haakon the Old in contrast to his son with the same name, and known in modern regnal lists as Haakon IV, was the King of Norway from 1217 to 1263. His reign lasted for 46 years, longer than any Norwegian king since Harald I. Haakon was born into the troubled civil war era in Norway, but his reign eventually managed to put an end to the internal conflicts. At the start of his reign, during his minority, his later rival Earl Skule Bårdsson served as regent. As a king of the birkebeiner faction, Haakon defeated the uprising of the final bagler royal pretender, Sigurd Ribbung, in 1227. He put a definitive end to the civil war era when he had Skule Bårdsson killed in 1240, a year after he had himself proclaimed king in opposition to Haakon. Haakon thereafter formally appointed his own son as his co-regent.
Document 9: KJSCE Symphony: Symphony, the annual cultural festival of K. J. Somaiya College of Engineering, has created its name and popularity among Engineering and Management institutes far and wide for the last decade. Every year many students from various institutes be a part of this festival. The main aim is to promote, encourage and exhibit the talents of the students on a common platform and create interest in the classical, vocal and instrumental music. Symphony hosts more than 9000 students every year. Symphony has been graced by artists of the magnitude of Pt. Hariprasad Chaurasia, Pt ShivKumar Sharma, Louis Banks, Hariharan, Indus Creed, Parikrama, KK, Bombay Vikings, Taufiq Qureshi, Dagar, Suraj Jagan, and Ustad Zakir Hussain. The event also has a social touch to propagate a message relevant to the times like AIDS awareness, etc. There have also been Auto Shows and an Army display at Symphony. The organization is done by students which is also a time for building strong camaraderie and teamwork. Many students look back fondly at the memories gathered during this phase of their lives.
Document 10: Fields Medal Symposium: The Fields Medal Symposium is an annual event that honours one of the Fields Medal recipients from the most recent International Congress of Mathematicians. The symposium is jointly endorsed by the International Mathematical Union and the Fields Institute for Mathematical Sciences. The idea was conceived in preparation for the International Congress of Mathematicians 2010 (ICM2010) in Hyberdad, India. Professor Edward Bierstone of the University of Toronto was the director of the institute during the inaugural symposium in October 2012. All symposiums take place at the Fields Institute in Toronto, Canada. The symposia include mathematical activity that explore work related to the honoured Fields Medallist. They will include public lectures meant to spark interest in mathematics including public lectures and events for students.
Document 11: Harald V of Norway: Harald V (] ; born 21 February 1937) is the King of Norway, having ascended the throne following the death of his father on 17 January 1991.
Document 12: Oslo Freedom Forum: Oslo Freedom Forum (OFF) is a series of global conferences run by the New York-based non-profit Human Rights Foundation under the slogan “Challenging Power.” OFF was founded in 2009 as a one-time event and has taken place annually ever since. One of the key objectives of the conferences is to bring together notable people, including former heads of state, winners of the Nobel Peace Prize, prisoners of conscience, as well as of other public figures in order to network and exchange ideas about human rights and exposing dictatorships.
Document 13: Dag Hareide: Dag Hareide (born 24 February 1949) is an organizational leader and author. He was knighted in the First Order of St. Olav by the King of Norway in 2015 for exceptional engagement in social innovation in civil society. He has been director of Rainforest Foundation Norway (2012 - 2015), one of the largest rainforest organizations in the world, Director of Nansen Academy Norway, the Norwegian Humanistic Academy which included the Nansen Center for Peace and Dialogue (2006 - 2012) and of other folk high schools, Chair of Nordic Forum for Mediation and Conflict Management (2002–2006) which gathered conflict mediators from the five Nordic countries. Curriculum developer in conflict management at the Norwegian Police University College, General Secretary of Oslo City Mission, a comprehensive diaconical institution, Chair of the Namibia Association of Norway, which was a leading NGO in Europe in support for SWAPO, the liberation movement for Namibia. Rehabilitation Coordinator for United Nations Emergency Office during the famine in Ethiopia (1985–1988) and returned later to coordinate and write the first five-year National Disaster Preparedness Plan in Ethiopia for the Ethiopian Government (1996–1998) General secretary of Friends of the Earth Norway, the largest environmental organization in Norway (1990–1995). He has also workes as journalist, pastor, teacher at high schools and University Colleges, initiated several campaigns and associations working for solidarity, dialogue and protection of the environment. He served as vice chair of the National Value Commission (Verdikommisjonen) which was formed by the Norwegian Prime Minister, and member of the Commission that formulated the objectives for the Norwegian School system (Bostadutvalget) https://www.gd.no/nyheter/lager-ny-formalsparagraf-i-skolen/s/1-934610-2342653. He chaired the first official dialogue between all faith and life stand communities in Norway. He has a Doctorate in Sociology (Magistergrad) from University of Oslo on the topic of vulnerability and preparedness in famine, and studies in religion, intellectual history, mass media, agriculture and statistics from different Universities and University Colleges in US and Norway.
Document 14: Frederik, Crown Prince of Denmark: Frederik, Crown Prince of Denmark, Count of Monpezat, {'1': ", '2': ", '3': 'RE, SKmd', '4': "} (Frederik André Henrik Christian; born 26 May 1968) is the heir apparent to the throne of Denmark. Frederik is the elder son of Queen Margrethe II and Henrik, the Prince Consort.
Document 15: Princess Märtha Louise of Norway: Princess Märtha Louise of Norway (born 22 September 1971) is the only daughter and elder child of King Harald V and Queen Sonja. She is fourth in the line of succession to the Norwegian throne, after her brother Haakon, and his two children.
ground_truth: 20 July 1973